CVE-2025-69228

HIGH7.5EPSS 0.06%

AIOHTTP vulnerable to denial of service through large payloads

Published: 1/5/2026Modified: 2/4/2026

Also known as:GHSA-6jhg-hg63-jvvfCGA-4xfw-m3m9-68fv

Description

### Summary A request can be crafted in such a way that an aiohttp server's memory fills up uncontrollably during processing. ### Impact If an application includes a handler that uses the `Request.post()` method, an attacker may be able to freeze the server by exhausting the memory. ----- Patch: https://github.com/aio-libs/aiohttp/commit/b7dbd35375aedbcd712cbae8ad513d56d11cce60

Affected packages (2)

Debian/python-aiohttpfrom 0
PyPI/aiohttpfrom 0, < 3.13.3

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 4.0	—	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
osv	CVSS 3.1	HIGH7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References (5)

ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-69228
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2025-69228
PATCHhttps://github.com/aio-libs/aiohttp
WEBhttps://github.com/aio-libs/aiohttp/commit/b7dbd35375aedbcd712cbae8ad513d56d11cce60
WEBhttps://github.com/aio-libs/aiohttp/security/advisories/GHSA-6jhg-hg63-jvvf