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  5. CVE-2023-49082

CVE-2023-49082: aiohttp's ClientSession is vulnerable to CRLF injection via method

November 27, 2023 (updated November 3, 2025)

Improper validation makes it possible for an attacker to modify the HTTP request (e.g. insert a new header) or even create a new HTTP request if the attacker controls the HTTP method.

References

  • gist.github.com/jnovikov/7f411ae9fe6a9a7804cf162a3bdbb44b
  • github.com/advisories/GHSA-qvrw-v9rv-5rjx
  • github.com/aio-libs/aiohttp
  • github.com/aio-libs/aiohttp/commit/e4ae01c2077d2cfa116aa82e4ff6866857f7c466
  • github.com/aio-libs/aiohttp/pull/7806/files
  • github.com/aio-libs/aiohttp/security/advisories/GHSA-qvrw-v9rv-5rjx
  • github.com/pypa/advisory-database/tree/main/vulns/aiohttp/PYSEC-2023-251.yaml
  • lists.debian.org/debian-lts-announce/2025/02/msg00002.html
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TY5SI6NK5243DEEDQUFKQKW5GQNKQUMA
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WSYWMP64ZFCTC3VO6RY6EC6VSSMV6I3A
  • nvd.nist.gov/vuln/detail/CVE-2023-49082

Code Behaviors & Features

Detect and mitigate CVE-2023-49082 with GitLab Dependency Scanning

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Affected versions

All versions before 3.9.0

Fixed versions

  • 3.9.0

Solution

Upgrade to version 3.9.0 or above.

Impact 5.3 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Learn more about CVSS

Weakness

  • CWE-20: Improper Input Validation

Source file

pypi/aiohttp/CVE-2023-49082.yml

Spotted a mistake? Edit the file on GitLab.

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