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Package details: pkg:deb/debian/python-urllib3@1.26.5-1~exp1
purl pkg:deb/debian/python-urllib3@1.26.5-1~exp1
Next non-vulnerable version 1.26.12-1+deb12u1
Latest non-vulnerable version 1.26.12-1+deb12u1
Risk 4.0
Vulnerabilities affecting this package (3)
Vulnerability Summary Fixed by
VCID-1cgk-q3r3-aaam
Aliases:
CVE-2024-37891
GHSA-34jh-p97f-mpxf
urllib3's Proxy-Authorization request header isn't stripped during cross-origin redirects When using urllib3's proxy support with `ProxyManager`, the `Proxy-Authorization` header is only sent to the configured proxy, as expected. However, when sending HTTP requests *without* using urllib3's proxy support, it's possible to accidentally configure the `Proxy-Authorization` header even though it won't have any effect as the request is not using a forwarding proxy or a tunneling proxy. In those cases, urllib3 doesn't treat the `Proxy-Authorization` HTTP header as one carrying authentication material and thus doesn't strip the header on cross-origin redirects. Because this is a highly unlikely scenario, we believe the severity of this vulnerability is low for almost all users. Out of an abundance of caution urllib3 will automatically strip the `Proxy-Authorization` header during cross-origin redirects to avoid the small chance that users are doing this on accident. Users should use urllib3's proxy support or disable automatic redirects to achieve safe processing of the `Proxy-Authorization` header, but we still decided to strip the header by default in order to further protect users who aren't using the correct approach. ## Affected usages We believe the number of usages affected by this advisory is low. It requires all of the following to be true to be exploited: * Setting the `Proxy-Authorization` header without using urllib3's built-in proxy support. * Not disabling HTTP redirects. * Either not using an HTTPS origin server or for the proxy or target origin to redirect to a malicious origin. ## Remediation * Using the `Proxy-Authorization` header with urllib3's `ProxyManager`. * Disabling HTTP redirects using `redirects=False` when sending requests. * Not using the `Proxy-Authorization` header.
1.26.12-1+deb12u1
Affected by 0 other vulnerabilities.
2.2.3-4
Affected by 0 other vulnerabilities.
VCID-c4sy-7zv4-aaas
Aliases:
CVE-2023-43804
GHSA-v845-jxx5-vc9f
PYSEC-0000-CVE-2023-43804
PYSEC-2023-192
`Cookie` HTTP header isn't stripped on cross-origin redirects
1.26.12-1+deb12u1
Affected by 0 other vulnerabilities.
1.26.18-1
Affected by 0 other vulnerabilities.
1.26.18-2
Affected by 0 other vulnerabilities.
2.0.7-2
Affected by 0 other vulnerabilities.
2.2.3-4
Affected by 0 other vulnerabilities.
VCID-r496-vgsm-aaac
Aliases:
CVE-2023-45803
GHSA-g4mx-q9vg-27p4
PYSEC-0000-CVE-2023-45803
PYSEC-2023-212
urllib3's request body not stripped after redirect from 303 status changes request method to GET
1.26.12-1+deb12u1
Affected by 0 other vulnerabilities.
1.26.18-2
Affected by 0 other vulnerabilities.
2.0.7-2
Affected by 0 other vulnerabilities.
2.2.3-4
Affected by 0 other vulnerabilities.
Vulnerabilities fixed by this package (9)
Vulnerability Summary Aliases
VCID-457q-9vme-aaac The _encode_invalid_chars function in util/url.py in the urllib3 library 1.25.2 through 1.25.7 for Python allows a denial of service (CPU consumption) because of an inefficient algorithm. The percent_encodings array contains all matches of percent encodings. It is not deduplicated. For a URL of length N, the size of percent_encodings may be up to O(N). The next step (normalize existing percent-encoded bytes) also takes up to O(N) for each step, so the total time is O(N^2). If percent_encodings were deduplicated, the time to compute _encode_invalid_chars would be O(kN), where k is at most 484 ((10+6*2)^2). CVE-2020-7212
GHSA-hmv2-79q8-fv6g
PYSEC-2020-149
VCID-6rq6-hxp1-aaae Uncontrolled Resource Consumption An issue was discovered in urllib3, when provided with a URL containing many `@` characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect. CVE-2021-33503
GHSA-q2q7-5pp4-w6pg
PYSEC-2021-108
VCID-7ghb-wt6a-aaah urllib3 before 1.25.9 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of putrequest(). NOTE: this is similar to CVE-2020-26116. CVE-2020-26137
GHSA-wqvq-5m8c-6g24
PYSEC-2020-148
VCID-9ruw-cgv6-aaar The urllib3 library 1.26.x before 1.26.4 for Python omits SSL certificate validation in some cases involving HTTPS to HTTPS proxies. The initial connection to the HTTPS proxy (if an SSLContext isn't given via proxy_config) doesn't verify the hostname of the certificate. This means certificates for different servers that still validate properly with the default urllib3 SSLContext will be silently accepted. CVE-2021-28363
GHSA-5phf-pp7p-vc2r
PYSEC-2021-59
VCID-c4sy-7zv4-aaas `Cookie` HTTP header isn't stripped on cross-origin redirects CVE-2023-43804
GHSA-v845-jxx5-vc9f
PYSEC-0000-CVE-2023-43804
PYSEC-2023-192
VCID-mzxq-w8z6-aaah urllib3 before 1.24.2 does not remove the authorization HTTP header when following a cross-origin redirect (i.e., a redirect that differs in host, port, or scheme). This can allow for credentials in the authorization header to be exposed to unintended hosts or transmitted in cleartext. NOTE: this issue exists because of an incomplete fix for CVE-2018-20060 (which was case-sensitive). CVE-2018-25091
GHSA-gwvm-45gx-3cf8
PYSEC-0000-CVE-2018-25091
PYSEC-2023-207
VCID-n7px-rq6v-aaaa The urllib3 library before 1.24.2 for Python mishandles certain cases where the desired set of CA certificates is different from the OS store of CA certificates, which results in SSL connections succeeding in situations where a verification failure is the correct outcome. This is related to use of the ssl_context, ca_certs, or ca_certs_dir argument. CVE-2019-11324
GHSA-mh33-7rrq-662w
PYSEC-2019-133
PYSEC-2019-63
VCID-r496-vgsm-aaac urllib3's request body not stripped after redirect from 303 status changes request method to GET CVE-2023-45803
GHSA-g4mx-q9vg-27p4
PYSEC-0000-CVE-2023-45803
PYSEC-2023-212
VCID-v8kv-yq79-aaar In the urllib3 library for Python, CRLF injection is possible if the attacker controls the request parameter. CVE-2019-11236
GHSA-r64q-w8jr-g9qp
PYSEC-2019-132
PYSEC-2019-62

Date Actor Action Vulnerability Source VulnerableCode Version
2025-06-21T19:59:54.330917+00:00 Debian Importer Fixing VCID-7ghb-wt6a-aaah None 36.1.3
2025-06-21T17:57:01.171501+00:00 Debian Oval Importer Fixing VCID-v8kv-yq79-aaar https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.1.3
2025-06-21T15:46:55.062117+00:00 Debian Oval Importer Fixing VCID-7ghb-wt6a-aaah https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.1.3
2025-06-21T14:07:41.341287+00:00 Debian Oval Importer Fixing VCID-mzxq-w8z6-aaah https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.1.3
2025-06-21T13:46:10.138744+00:00 Debian Importer Fixing VCID-n7px-rq6v-aaaa None 36.1.3
2025-06-21T13:13:14.789030+00:00 Debian Oval Importer Fixing VCID-r496-vgsm-aaac https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.1.3
2025-06-21T12:58:15.563268+00:00 Debian Oval Importer Fixing VCID-n7px-rq6v-aaaa https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.1.3
2025-06-21T12:35:03.202018+00:00 Debian Oval Importer Fixing VCID-c4sy-7zv4-aaas https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.1.3
2025-06-21T08:55:06.922691+00:00 Debian Importer Affected by VCID-1cgk-q3r3-aaam https://security-tracker.debian.org/tracker/data/json 36.1.3
2025-06-21T06:31:59.323067+00:00 Debian Importer Fixing VCID-6rq6-hxp1-aaae None 36.1.3
2025-06-21T05:58:32.907806+00:00 Debian Oval Importer Fixing VCID-9ruw-cgv6-aaar None 36.1.3
2025-06-21T05:19:39.994207+00:00 Debian Oval Importer Fixing VCID-n7px-rq6v-aaaa None 36.1.3
2025-06-21T04:47:06.267938+00:00 Debian Oval Importer Fixing VCID-v8kv-yq79-aaar None 36.1.3
2025-06-21T03:58:43.486630+00:00 Debian Oval Importer Fixing VCID-7ghb-wt6a-aaah None 36.1.3
2025-06-21T03:16:19.735962+00:00 Debian Oval Importer Fixing VCID-457q-9vme-aaac None 36.1.3
2025-06-21T03:06:42.414171+00:00 Debian Oval Importer Fixing VCID-6rq6-hxp1-aaae None 36.1.3
2025-06-21T02:19:32.721184+00:00 Debian Importer Affected by VCID-r496-vgsm-aaac None 36.1.3
2025-06-21T02:15:56.460135+00:00 Debian Importer Fixing VCID-v8kv-yq79-aaar None 36.1.3
2025-06-21T01:55:15.333311+00:00 Debian Importer Affected by VCID-r496-vgsm-aaac https://security-tracker.debian.org/tracker/data/json 36.1.3
2025-06-20T21:21:25.527221+00:00 Debian Importer Affected by VCID-c4sy-7zv4-aaas None 36.1.3
2025-06-20T20:29:47.633466+00:00 Debian Importer Affected by VCID-c4sy-7zv4-aaas https://security-tracker.debian.org/tracker/data/json 36.1.3
2025-06-08T13:17:39.293463+00:00 Debian Oval Importer Fixing VCID-mzxq-w8z6-aaah https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 36.1.0
2025-06-08T10:28:43.001112+00:00 Debian Oval Importer Fixing VCID-v8kv-yq79-aaar https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.1.0
2025-06-08T08:40:22.849549+00:00 Debian Oval Importer Fixing VCID-7ghb-wt6a-aaah https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.1.0
2025-06-08T07:01:17.229085+00:00 Debian Oval Importer Fixing VCID-mzxq-w8z6-aaah https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.1.0
2025-06-08T06:07:55.651829+00:00 Debian Oval Importer Fixing VCID-r496-vgsm-aaac https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.1.0
2025-06-08T05:53:13.937868+00:00 Debian Oval Importer Fixing VCID-n7px-rq6v-aaaa https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.1.0
2025-06-08T05:33:09.476903+00:00 Debian Oval Importer Fixing VCID-c4sy-7zv4-aaas https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.1.0
2025-06-07T23:37:09.415719+00:00 Debian Oval Importer Fixing VCID-9ruw-cgv6-aaar None 36.1.0
2025-06-07T22:57:18.100904+00:00 Debian Oval Importer Fixing VCID-n7px-rq6v-aaaa None 36.1.0
2025-06-07T22:24:10.967112+00:00 Debian Oval Importer Fixing VCID-v8kv-yq79-aaar None 36.1.0
2025-06-07T21:34:00.082079+00:00 Debian Oval Importer Fixing VCID-7ghb-wt6a-aaah None 36.1.0
2025-06-07T20:49:20.379764+00:00 Debian Oval Importer Fixing VCID-457q-9vme-aaac None 36.1.0
2025-06-07T20:39:27.852903+00:00 Debian Oval Importer Fixing VCID-6rq6-hxp1-aaae None 36.1.0
2025-06-05T14:19:04.978456+00:00 Debian Importer Affected by VCID-c4sy-7zv4-aaas https://security-tracker.debian.org/tracker/data/json 36.1.0
2025-04-13T02:36:50.578680+00:00 Debian Oval Importer Affected by VCID-c4sy-7zv4-aaas https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 36.0.0
2025-04-13T02:36:43.763535+00:00 Debian Oval Importer Affected by VCID-r496-vgsm-aaac https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 36.0.0
2025-04-13T02:36:36.568560+00:00 Debian Oval Importer Affected by VCID-1cgk-q3r3-aaam https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 36.0.0
2025-04-12T22:37:25.819440+00:00 Debian Oval Importer Fixing VCID-v8kv-yq79-aaar https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 36.0.0
2025-04-12T22:02:52.383350+00:00 Debian Oval Importer Fixing VCID-n7px-rq6v-aaaa https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 36.0.0
2025-04-12T21:44:47.644708+00:00 Debian Oval Importer Fixing VCID-7ghb-wt6a-aaah https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 36.0.0
2025-04-12T21:37:22.385840+00:00 Debian Oval Importer Fixing VCID-6rq6-hxp1-aaae https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 36.0.0
2025-04-12T21:01:35.431148+00:00 Debian Oval Importer Fixing VCID-9ruw-cgv6-aaar https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 36.0.0
2025-04-12T19:35:09.584399+00:00 Debian Oval Importer Fixing VCID-457q-9vme-aaac https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 36.0.0
2025-04-12T19:05:40.109758+00:00 Debian Oval Importer Fixing VCID-mzxq-w8z6-aaah https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 36.0.0
2025-04-12T16:09:57.780175+00:00 Debian Oval Importer Fixing VCID-v8kv-yq79-aaar https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.0.0
2025-04-08T07:11:49.850595+00:00 Debian Oval Importer Fixing VCID-7ghb-wt6a-aaah https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.0.0
2025-04-08T05:33:57.736338+00:00 Debian Oval Importer Fixing VCID-mzxq-w8z6-aaah https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.0.0
2025-04-08T04:39:57.594026+00:00 Debian Oval Importer Fixing VCID-r496-vgsm-aaac https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.0.0
2025-04-08T04:25:04.074625+00:00 Debian Oval Importer Fixing VCID-n7px-rq6v-aaaa https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.0.0
2025-04-08T04:04:33.247890+00:00 Debian Oval Importer Fixing VCID-c4sy-7zv4-aaas https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 36.0.0
2025-04-07T22:09:14.805207+00:00 Debian Oval Importer Fixing VCID-9ruw-cgv6-aaar None 36.0.0
2025-04-07T21:29:20.324265+00:00 Debian Oval Importer Fixing VCID-n7px-rq6v-aaaa None 36.0.0
2025-04-07T20:55:43.338980+00:00 Debian Oval Importer Fixing VCID-v8kv-yq79-aaar None 36.0.0
2025-04-07T20:03:17.837799+00:00 Debian Oval Importer Fixing VCID-7ghb-wt6a-aaah None 36.0.0
2025-04-07T19:19:46.882267+00:00 Debian Oval Importer Fixing VCID-457q-9vme-aaac None 36.0.0
2025-04-07T19:09:56.565611+00:00 Debian Oval Importer Fixing VCID-6rq6-hxp1-aaae None 36.0.0
2025-04-05T16:10:46.956439+00:00 Debian Importer Fixing VCID-7ghb-wt6a-aaah None 36.0.0
2025-04-05T10:18:56.821902+00:00 Debian Importer Fixing VCID-n7px-rq6v-aaaa None 36.0.0
2025-04-05T06:11:16.826360+00:00 Debian Importer Affected by VCID-1cgk-q3r3-aaam https://security-tracker.debian.org/tracker/data/json 36.0.0
2025-04-05T03:47:10.016612+00:00 Debian Importer Fixing VCID-6rq6-hxp1-aaae None 36.0.0
2025-04-04T05:05:29.431172+00:00 Debian Importer Affected by VCID-r496-vgsm-aaac None 36.0.0
2025-04-04T05:01:42.114918+00:00 Debian Importer Fixing VCID-v8kv-yq79-aaar None 36.0.0
2025-04-04T04:40:34.156802+00:00 Debian Importer Affected by VCID-r496-vgsm-aaac https://security-tracker.debian.org/tracker/data/json 36.0.0
2025-04-03T23:59:21.712055+00:00 Debian Importer Affected by VCID-c4sy-7zv4-aaas None 36.0.0
2025-04-03T23:18:06.578295+00:00 Debian Importer Affected by VCID-c4sy-7zv4-aaas https://security-tracker.debian.org/tracker/data/json 36.0.0
2025-02-22T00:09:35.574916+00:00 Debian Importer Affected by VCID-1cgk-q3r3-aaam https://security-tracker.debian.org/tracker/data/json 35.1.0
2025-02-21T14:19:02.158949+00:00 Debian Importer Affected by VCID-r496-vgsm-aaac None 35.1.0
2025-02-21T14:19:01.480804+00:00 Debian Importer Affected by VCID-r496-vgsm-aaac https://security-tracker.debian.org/tracker/data/json 35.1.0
2025-02-21T13:59:57.821689+00:00 Debian Importer Affected by VCID-c4sy-7zv4-aaas None 35.1.0
2025-02-21T13:59:56.412477+00:00 Debian Importer Affected by VCID-c4sy-7zv4-aaas https://security-tracker.debian.org/tracker/data/json 35.1.0
2025-02-20T01:51:34.982609+00:00 Debian Importer Fixing VCID-6rq6-hxp1-aaae None 35.1.0
2025-02-19T15:15:04.846744+00:00 Debian Importer Fixing VCID-7ghb-wt6a-aaah None 35.1.0
2025-02-19T05:08:36.480888+00:00 Debian Importer Fixing VCID-n7px-rq6v-aaaa None 35.1.0
2025-02-19T05:07:59.905360+00:00 Debian Importer Fixing VCID-v8kv-yq79-aaar None 35.1.0
2024-12-15T15:28:42.501572+00:00 Debian Importer Affected by VCID-1cgk-q3r3-aaam https://security-tracker.debian.org/tracker/data/json 35.0.0
2024-11-24T03:25:56.617543+00:00 Debian Importer Affected by VCID-r496-vgsm-aaac https://security-tracker.debian.org/tracker/data/json 35.0.0
2024-11-24T03:08:15.477719+00:00 Debian Importer Affected by VCID-c4sy-7zv4-aaas https://security-tracker.debian.org/tracker/data/json 35.0.0
2024-11-22T12:21:09.831190+00:00 Debian Importer Fixing VCID-7ghb-wt6a-aaah None 35.0.0
2024-10-11T00:50:28.172834+00:00 Debian Importer Affected by VCID-r496-vgsm-aaac https://security-tracker.debian.org/tracker/data/json 34.0.2
2024-10-11T00:34:52.721456+00:00 Debian Importer Affected by VCID-c4sy-7zv4-aaas https://security-tracker.debian.org/tracker/data/json 34.0.2
2024-10-09T11:54:37.825129+00:00 Debian Importer Fixing VCID-7ghb-wt6a-aaah None 34.0.2
2024-09-20T05:21:08.808244+00:00 Debian Importer Affected by VCID-r496-vgsm-aaac https://security-tracker.debian.org/tracker/data/json 34.0.1
2024-09-20T05:13:41.034708+00:00 Debian Importer Affected by VCID-c4sy-7zv4-aaas https://security-tracker.debian.org/tracker/data/json 34.0.1
2024-09-18T21:29:03.887760+00:00 Debian Importer Fixing VCID-7ghb-wt6a-aaah None 34.0.1
2024-04-26T05:29:29.368206+00:00 Debian Importer Affected by VCID-r496-vgsm-aaac None 34.0.0rc4
2024-04-26T05:29:28.483339+00:00 Debian Importer Affected by VCID-r496-vgsm-aaac https://security-tracker.debian.org/tracker/data/json 34.0.0rc4
2024-04-26T05:19:22.487253+00:00 Debian Importer Affected by VCID-c4sy-7zv4-aaas None 34.0.0rc4
2024-04-26T05:19:21.685991+00:00 Debian Importer Affected by VCID-c4sy-7zv4-aaas https://security-tracker.debian.org/tracker/data/json 34.0.0rc4
2024-04-25T01:20:30.316321+00:00 Debian Importer Fixing VCID-6rq6-hxp1-aaae None 34.0.0rc4
2024-04-24T19:10:09.705206+00:00 Debian Importer Fixing VCID-7ghb-wt6a-aaah None 34.0.0rc4
2024-04-24T13:53:30.066830+00:00 Debian Importer Fixing VCID-n7px-rq6v-aaaa None 34.0.0rc4
2024-04-24T13:52:59.007732+00:00 Debian Importer Fixing VCID-v8kv-yq79-aaar None 34.0.0rc4
2024-01-11T02:20:41.591144+00:00 Debian Importer Fixing VCID-6rq6-hxp1-aaae None 34.0.0rc2
2024-01-10T20:39:03.172749+00:00 Debian Importer Fixing VCID-7ghb-wt6a-aaah None 34.0.0rc2
2024-01-10T16:39:09.502838+00:00 Debian Importer Fixing VCID-n7px-rq6v-aaaa None 34.0.0rc2
2024-01-10T16:38:36.159883+00:00 Debian Importer Fixing VCID-v8kv-yq79-aaar None 34.0.0rc2
2024-01-05T09:51:09.298986+00:00 Debian Importer Affected by VCID-c4sy-7zv4-aaas https://security-tracker.debian.org/tracker/data/json 34.0.0rc1
2024-01-05T09:51:06.845209+00:00 Debian Importer Affected by VCID-c4sy-7zv4-aaas None 34.0.0rc1
2024-01-04T14:40:59.880289+00:00 Debian Importer Fixing VCID-6rq6-hxp1-aaae None 34.0.0rc1
2024-01-04T09:59:02.968207+00:00 Debian Importer Fixing VCID-7ghb-wt6a-aaah None 34.0.0rc1
2024-01-04T06:23:03.310002+00:00 Debian Importer Fixing VCID-n7px-rq6v-aaaa None 34.0.0rc1
2024-01-04T06:22:37.155286+00:00 Debian Importer Fixing VCID-v8kv-yq79-aaar None 34.0.0rc1