CVE-2025-69227
Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below allow for an infinite loop to occur when assert statements are bypassed, resulting in a DoS attack when processing a POST body. If optimizations are enabled (-O or PYTHONOPTIMIZE=1), and the application includes a handler that uses the Request.post() method, then an attacker may be able to execute a DoS attack with a specially crafted message. This issue is fixed in version 3.13.3.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Mixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 3.11.16-1+deb13u1 |
| sid | Fixed | 3.13.3-1 |
| forky | Fixed | 3.13.3-1 |
| bullseye | Fixed | 3.7.4-1+deb11u2 |
| bookworm | Affected | — |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | aiohttp | <3.13.3 | 3.13.3 |
References
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jj3x-wxrx-4x23
- https://nvd.nist.gov/vuln/detail/CVE-2025-69227
- https://github.com/aio-libs/aiohttp/commit/bc1319ec3cbff9438a758951a30907b072561259
- https://github.com/aio-libs/aiohttp
- https://www.suse.com/security/cve/CVE-2025-69227.html
- https://security-tracker.debian.org/tracker/CVE-2025-69227
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.