aio-libs/aiohttp · Security
AIOHTTP vulnerable to DoS when bypassing asserts
- GHSA ID
- GHSA-jj3x-wxrx-4x23
- CVE ID
- CVE-2025-69227
- Severity
- medium
- Published
- Updated
- CVSS v4
- 6.6 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
Description
Summary
When assert statements are bypassed, an infinite loop can occur, resulting in a DoS attack when processing a POST body.
Impact
If optimisations 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.
Patch: https://github.com/aio-libs/aiohttp/commit/bc1319ec3cbff9438a758951a30907b072561259
CWEs
- CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')