Bug 2427246 (CVE-2025-69224)

Summary:	CVE-2025-69224 aiohttp: aiohttp: Request smuggling via non-ASCII characters in HTTP parser
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	adudiak, alinfoot, anpicker, anthomas, bbrownin, bdettelb, bparees, carogers, caswilli, dfreiber, doconnor, drow, dtrifiro, dymurray, ehelms, erezende, ggainey, haoli, hasun, hkataria, ibolton, jajackso, jburrell, jcammara, jdobes, jfula, jkoehler, jmatthew, jmitchel, jmontleo, jneedle, jowilson, jsamir, juwatts, jwong, kaycoth, kegrant, koliveir, kshier, lphiri, mabashia, mhulan, nmoumoul, nyancey, omaciel, ometelka, orabin, osousa, pakotvan, pbohmill, pbraun, pcreech, pgaikwad, ptisnovs, rbryant, rchan, rjohnson, shvarugh, simaishi, slucidi, smallamp, smcdonal, sseago, stcannon, sthirugn, syedriko, teagle, tfister, thavo, tmalecek, ttakamiy, vkumar, weaton, xdharmai, yguenane
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in aiohttp, an asynchronous HTTP client/server framework for Python. A remote attacker could exploit this vulnerability by sending requests containing non-ASCII characters to the Python HTTP parser. This could lead to a request smuggling attack, allowing the attacker to bypass certain firewall or proxy protections, particularly when a pure Python version of AIOHTTP is in use or AIOHTTP_NO_EXTENSIONS is enabled.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-01-05 23:01:19 UTC

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below of the Python HTTP parser may allow a request smuggling attack with the presence of non-ASCII characters. If a pure Python version of AIOHTTP is installed (i.e. without the usual C extensions) or AIOHTTP_NO_EXTENSIONS is enabled, then an attacker may be able to execute a request smuggling attack to bypass certain firewalls or proxy protections. This issue is fixed in version 3.13.3.