VDB
CVE-2026-34525
CVE-2026-34525
PUBLISHED
CVSS 6.300000190734863 MEDIUM
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, multiple Host headers were allowed in aiohttp. This issue has been patched in version 3.13.4.
EPSS 0.13% · 32.1th percentile
Risk Scores
CVSS v4.0
6.300000190734863
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N
EPSS Score
0.13%
32.1th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| PyPI | aiohttp | 0 |
| aio-libs | aiohttp | < 3.13.4 |
Timeline
- Apr 1, 2026 CVE Published
- Apr 2, 2026 Security Advisory
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score
- May 23, 2026 EPSS Score
- May 24, 2026 EPSS Score
- May 25, 2026 EPSS Score
- May 26, 2026 EPSS Score
- May 27, 2026 EPSS Score
References
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-c427-h43c-vf67 url
- https://github.com/aio-libs/aiohttp/commit/53e2e6fc58b89c6185be7820bd2c9f40216b3000 url
- https://github.com/aio-libs/aiohttp/commit/e00ca3cca92c465c7913c4beb763a72da9ed8349 url
- https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4 url
- https://nvd.nist.gov/vuln/detail/CVE-2026-34525 advisory
- https://github.com/aio-libs/aiohttp package
- https://www.ibm.com/support/pages/node/7271707 advisory
- https://www.ibm.com/support/pages/node/7271922 advisory
- https://www.ibm.com/support/pages/node/7271681 advisory
- https://www.ibm.com/support/pages/node/7271765 advisory
- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/37451 advisory
- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/37445 advisory
- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/37460 advisory
- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/37449 advisory
- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/37450 advisory
- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/37466 advisory
- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/37468 advisory
- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/37444 advisory
- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/37461 advisory
- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/37459 advisory
…and 8 more