AIOHTTP vulnerable to DoS when bypassing asserts

SummaryWhen assert statements are bypassed, an infinite loop can occur, resulting in a DoS attack when processing a POST body. ImpactIf 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 execu...

CVE-2025-69227

CVE-2025-69227 affects AIOHTTP (async HTTP client/server for asyncio) with vulnerable versions 3.13.2 and earlier. The issue is an infinite loop that can trigger a DoS when assert statements are bypassed during POST body processing; if optimizations are enabled (-O or PYTHONOPTIMIZE=1) and a hand...

AIOHTTP vulnerable to DoS when bypassing asserts

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...