aio-libs/aiohttp · Security
aiohttp allows unlimited trailer headers, leading to possible uncapped memory usage
- GHSA ID
- GHSA-w2fm-2cpv-w7v5
- CVE ID
- CVE-2026-22815
- Severity
- medium
- Published
- Updated
- CVSS v4
- 6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Description
Summary
Insufficient restrictions in header/trailer handling could cause uncapped memory usage.
Impact
An application could cause memory exhaustion when receiving an attacker controlled request or response. A vulnerable web application could mitigate these risks with a typical reverse proxy configuration.
Patch: https://github.com/aio-libs/aiohttp/commit/0c2e9da51126238a421568eb7c5b53e5b5d17b36
CWEs
- CWE-400 · Uncontrolled Resource Consumption
- CWE-770 · Allocation of Resources Without Limits or Throttling
References
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-w2fm-2cpv-w7v5 ↗
- https://github.com/aio-libs/aiohttp/commit/0c2e9da51126238a421568eb7c5b53e5b5d17b36 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2026-22815 ↗
- https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4 ↗
- https://github.com/advisories/GHSA-w2fm-2cpv-w7v5 ↗