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Vulnerability details: VCID-jtgf-td4z-2khx
Vulnerability ID VCID-jtgf-td4z-2khx
Aliases CVE-2023-47641
GHSA-xx9p-xxvh-7g8j
PYSEC-2023-247
Summary aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Affected versions of aiohttp have a security vulnerability regarding the inconsistent interpretation of the http protocol. HTTP/1.1 is a persistent protocol, if both Content-Length(CL) and Transfer-Encoding(TE) header values are present it can lead to incorrect interpretation of two entities that parse the HTTP and we can poison other sockets with this incorrect interpretation. A possible Proof-of-Concept (POC) would be a configuration with a reverse proxy(frontend) that accepts both CL and TE headers and aiohttp as backend. As aiohttp parses anything with chunked, we can pass a chunked123 as TE, the frontend entity will ignore this header and will parse Content-Length. The impact of this vulnerability is that it is possible to bypass any proxy rule, poisoning sockets to other users like passing Authentication Headers, also if it is present an Open Redirect an attacker could combine it to redirect random users to another website and log the request. This vulnerability has been addressed in release 3.8.0 of aiohttp. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 3.4 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-47641.json
epss 0.00358 https://api.first.org/data/v1/epss?cve=CVE-2023-47641
cvssv3.1 5.4 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 3.4 https://github.com/aio-libs/aiohttp
cvssv4 2.3 https://github.com/aio-libs/aiohttp
generic_textual LOW https://github.com/aio-libs/aiohttp
cvssv3.1 3.4 https://github.com/aio-libs/aiohttp/commit/f016f0680e4ace6742b03a70cb0382ce86abe371
cvssv3.1 6.5 https://github.com/aio-libs/aiohttp/commit/f016f0680e4ace6742b03a70cb0382ce86abe371
cvssv4 2.3 https://github.com/aio-libs/aiohttp/commit/f016f0680e4ace6742b03a70cb0382ce86abe371
generic_textual LOW https://github.com/aio-libs/aiohttp/commit/f016f0680e4ace6742b03a70cb0382ce86abe371
ssvc Track https://github.com/aio-libs/aiohttp/commit/f016f0680e4ace6742b03a70cb0382ce86abe371
cvssv3.1 3.4 https://github.com/aio-libs/aiohttp/releases/tag/v3.8.0
cvssv4 2.3 https://github.com/aio-libs/aiohttp/releases/tag/v3.8.0
generic_textual LOW https://github.com/aio-libs/aiohttp/releases/tag/v3.8.0
cvssv3.1 3.4 https://github.com/aio-libs/aiohttp/security/advisories/GHSA-xx9p-xxvh-7g8j
cvssv3.1 6.5 https://github.com/aio-libs/aiohttp/security/advisories/GHSA-xx9p-xxvh-7g8j
cvssv4 2.3 https://github.com/aio-libs/aiohttp/security/advisories/GHSA-xx9p-xxvh-7g8j
generic_textual LOW https://github.com/aio-libs/aiohttp/security/advisories/GHSA-xx9p-xxvh-7g8j
ssvc Track https://github.com/aio-libs/aiohttp/security/advisories/GHSA-xx9p-xxvh-7g8j
cvssv3.1 3.4 https://github.com/pypa/advisory-database/tree/main/vulns/aiohttp/PYSEC-2023-247.yaml
cvssv4 2.3 https://github.com/pypa/advisory-database/tree/main/vulns/aiohttp/PYSEC-2023-247.yaml
generic_textual LOW https://github.com/pypa/advisory-database/tree/main/vulns/aiohttp/PYSEC-2023-247.yaml
cvssv3.1 3.4 https://lists.debian.org/debian-lts-announce/2025/02/msg00002.html
cvssv4 2.3 https://lists.debian.org/debian-lts-announce/2025/02/msg00002.html
generic_textual LOW https://lists.debian.org/debian-lts-announce/2025/02/msg00002.html
cvssv3.1 3.4 https://nvd.nist.gov/vuln/detail/CVE-2023-47641
cvssv4 2.3 https://nvd.nist.gov/vuln/detail/CVE-2023-47641
generic_textual LOW https://nvd.nist.gov/vuln/detail/CVE-2023-47641
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-47641.json
https://api.first.org/data/v1/epss?cve=CVE-2023-47641
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-47641
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/aio-libs/aiohttp
https://github.com/aio-libs/aiohttp/commit/f016f0680e4ace6742b03a70cb0382ce86abe371
https://github.com/aio-libs/aiohttp/releases/tag/v3.8.0
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-xx9p-xxvh-7g8j
https://github.com/pypa/advisory-database/tree/main/vulns/aiohttp/PYSEC-2023-247.yaml
https://lists.debian.org/debian-lts-announce/2025/02/msg00002.html
https://nvd.nist.gov/vuln/detail/CVE-2023-47641
2250179 https://bugzilla.redhat.com/show_bug.cgi?id=2250179
GHSA-xx9p-xxvh-7g8j https://github.com/advisories/GHSA-xx9p-xxvh-7g8j
GLSA-202408-11 https://security.gentoo.org/glsa/202408-11
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-47641.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N Found at https://github.com/aio-libs/aiohttp
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N Found at https://github.com/aio-libs/aiohttp
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N Found at https://github.com/aio-libs/aiohttp/commit/f016f0680e4ace6742b03a70cb0382ce86abe371
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://github.com/aio-libs/aiohttp/commit/f016f0680e4ace6742b03a70cb0382ce86abe371
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N Found at https://github.com/aio-libs/aiohttp/commit/f016f0680e4ace6742b03a70cb0382ce86abe371
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-08-29T20:18:44Z/ Found at https://github.com/aio-libs/aiohttp/commit/f016f0680e4ace6742b03a70cb0382ce86abe371
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N Found at https://github.com/aio-libs/aiohttp/releases/tag/v3.8.0
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N Found at https://github.com/aio-libs/aiohttp/releases/tag/v3.8.0
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N Found at https://github.com/aio-libs/aiohttp/security/advisories/GHSA-xx9p-xxvh-7g8j
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://github.com/aio-libs/aiohttp/security/advisories/GHSA-xx9p-xxvh-7g8j
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N Found at https://github.com/aio-libs/aiohttp/security/advisories/GHSA-xx9p-xxvh-7g8j
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-08-29T20:18:44Z/ Found at https://github.com/aio-libs/aiohttp/security/advisories/GHSA-xx9p-xxvh-7g8j
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N Found at https://github.com/pypa/advisory-database/tree/main/vulns/aiohttp/PYSEC-2023-247.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N Found at https://github.com/pypa/advisory-database/tree/main/vulns/aiohttp/PYSEC-2023-247.yaml
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N Found at https://lists.debian.org/debian-lts-announce/2025/02/msg00002.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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adjacent_network

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Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N Found at https://lists.debian.org/debian-lts-announce/2025/02/msg00002.html
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-47641
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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adjacent_network

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Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-47641
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Exploit Prediction Scoring System (EPSS)
Percentile 0.58234
EPSS Score 0.00358
Published At May 29, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-05-29T08:45:32.928061+00:00 Pypa Importer Import https://github.com/pypa/advisory-database/blob/main/vulns/aiohttp/PYSEC-2023-247.yaml 38.6.0