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D-xq56-8p3c-87d5"},{"vulnerability":"VCID-zw1w-sbf6-rbeu"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:pypi/urllib3@1.25.8"}],"aliases":["CVE-2020-7212","GHSA-hmv2-79q8-fv6g","PYSEC-2020-149"],"risk_score":null,"exploitability":"0.5","weighted_severity":"0.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-13yn-dgn6-aqdx"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/304397?format=json","vulnerability_id":"VCID-3ggh-4hy1-vqba","summary":"","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-50181.json","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-50181.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2025-50181","reference_id":"","reference_type":"","scores":[{"value":"0.00079","scoring_system":"epss","scoring_elements":"0.23444","published_at":"2026-05-30T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2025-50181"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/urllib3/urllib3","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/urllib3/urllib3"},{"reference_url":"https://github.com/urllib3/urllib3/commit/f05b1329126d5be6de501f9d1e3e36738bc08857","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-23T16:45:50Z/"}],"url":"https://github.com/urllib3/urllib3/commit/f05b1329126d5be6de501f9d1e3e36738bc08857"},{"reference_url":"https://github.com/urllib3/urllib3/releases/tag/2.5.0","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-23T16:45:50Z/"}],"url":"https://github.com/urllib3/urllib3/releases/tag/2.5.0"},{"reference_url":"https://github.com/urllib3/urllib3/security/advisories/GHSA-pq67-6m6q-mj2v","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-23T16:45:50Z/"}],"url":"https://github.com/urllib3/urllib3/security/advisories/GHSA-pq67-6m6q-mj2v"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2025-50181","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-50181"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1108076","reference_id":"1108076","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1108076"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2373799","reference_id":"2373799","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2373799"},{"reference_url":"https://github.com/advisories/GHSA-pq67-6m6q-mj2v","reference_id":"GHSA-pq67-6m6q-mj2v","reference_type":"","scores":[],"url":"https://github.com/advisories/GHSA-pq67-6m6q-mj2v"},{"reference_url":"https://access.redhat.com/errata/RHSA-2026:4215","reference_id":"RHSA-2026:4215","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2026:4215"},{"reference_url":"https://usn.ubuntu.com/7599-1/","reference_id":"USN-7599-1","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/7599-1/"},{"reference_url":"https://usn.ubuntu.com/7599-2/","reference_id":"USN-7599-2","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/7599-2/"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/49325?format=json","purl":"pkg:pypi/urllib3@2.5.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"v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safeguards bypassed when following HTTP redirects (streaming API)\nurllib3's [streaming API](https://urllib3.readthedocs.io/en/2.6.2/advanced-usage.html#streaming-and-i-o) is designed for the efficient handling of large HTTP responses by reading the content in chunks, rather than loading the entire response body into memory at once.\n\nurllib3 can perform decoding or decompression based on the HTTP `Content-Encoding` header (e.g., `gzip`, `deflate`, `br`, or `zstd`). When using the streaming API, the library decompresses only the necessary bytes, enabling partial content consumption.\n\nHowever, for HTTP redirect responses, the library would read the entire response body to drain the connection and decompress the content unnecessarily. This decompression occurred even before any read methods were called, and configured read limits did not restrict the amount of decompressed data. As a result, there was no safeguard against decompression bombs. 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streaming API improperly handles highly compressed data\nurllib3's [streaming API](https://urllib3.readthedocs.io/en/2.5.0/advanced-usage.html#streaming-and-i-o) is designed for the efficient handling of large HTTP responses by reading the content in chunks, rather than loading the entire response body into memory at once.\n\nWhen streaming a compressed response, urllib3 can perform decoding or decompression based on the HTTP `Content-Encoding` header (e.g., `gzip`, `deflate`, `br`, or `zstd`). 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is a user-friendly HTTP client library for Python. urllib3 previously wouldn't remove the HTTP request body when an HTTP redirect response using status 301, 302, or 303 after the request had its method changed from one that could accept a request body (like `POST`) to `GET` as is required by HTTP RFCs. Although this behavior is not specified in the section for redirects, it can be inferred by piecing together information from different sections and we have observed the behavior in other major HTTP client implementations like curl and web browsers. Because the vulnerability requires a previously trusted service to become compromised in order to have an impact on confidentiality we believe the exploitability of this vulnerability is low. Additionally, many users aren't putting sensitive data in HTTP request bodies, if this is the case then this vulnerability isn't exploitable. Both of the following conditions must be true to be affected by this vulnerability: 1. Using urllib3 and submitting sensitive information in the HTTP request body (such as form data or JSON) and 2. The origin service is compromised and starts redirecting using 301, 302, or 303 to a malicious peer or the redirected-to service becomes compromised. This issue has been addressed in versions 1.26.18 and 2.0.7 and users are advised to update to resolve this issue. Users unable to update should disable redirects for services that aren't expecting to respond with redirects with `redirects=False` and disable automatic redirects with `redirects=False` and handle 301, 302, and 303 redirects manually by stripping the HTTP request 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From 1.23 to before 2.7.0, cross-origin redirects followed from the low-level API via ProxyManager.connection_from_url().urlopen(..., assert_same_host=False) still forward these sensitive headers. This vulnerability is fixed in 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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.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-26137.json","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-26137.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-26137","reference_id":"","reference_type":"","scores":[{"value":"0.00279","scoring_system":"epss","scoring_elements":"0.5153","published_at":"2026-05-30T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-26137"},{"reference_url":"https://bugs.python.org/issue39603","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},{"value":"6.9","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://bugs.python.org/issue39603"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"5.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/advisories/GHSA-wqvq-5m8c-6g24","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-wqvq-5m8c-6g24"},{"reference_url":"https://github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2020-148.yaml","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},{"value":"6.9","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2020-148.yaml"},{"reference_url":"https://github.com/urllib3/urllib3","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},{"value":"6.9","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/urllib3/urllib3"},{"reference_url":"https://github.com/urllib3/urllib3/commit/1dd69c5c5982fae7c87a620d487c2ebf7a6b436b","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},{"value":"6.9","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/urllib3/urllib3/commit/1dd69c5c5982fae7c87a620d487c2ebf7a6b436b"},{"reference_url":"https://github.com/urllib3/urllib3/pull/1800","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},{"value":"6.9","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/urllib3/urllib3/pull/1800"},{"reference_url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00015.html","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},{"value":"6.9","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00015.html"},{"reference_url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00012.html","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},{"value":"6.9","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00012.html"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26137","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS: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