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aiohttp: AIOHTTP: Denial of Service via malformed HTTP responses

🗓️ 24 Aug 2026 16:39:47Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 3 Views

Out-of-bounds heap read in AIOHTTP C response parser via malformed HTTP responses causes DoS.

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Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9aarch64automation-controller-venv-tower4.7.16-1.el9apautomation-controller-venv-tower-4.7.16-1.el9ap.aarch64.rpm
Red Hat Enterprise Linux9ppc64leautomation-controller-venv-tower4.7.16-1.el9apautomation-controller-venv-tower-4.7.16-1.el9ap.ppc64le.rpm
Red Hat Enterprise Linux9s390xautomation-controller-venv-tower4.7.16-1.el9apautomation-controller-venv-tower-4.7.16-1.el9ap.s390x.rpm
Red Hat Enterprise Linux9x86_64automation-controller-venv-tower4.7.16-1.el9apautomation-controller-venv-tower-4.7.16-1.el9ap.x86_64.rpm
Red Hat Enterprise Linux9aarch64python3.12-aiohttp3.14.3-1.el9appython3.12-aiohttp-3.14.3-1.el9ap.aarch64.rpm
Red Hat Enterprise Linux9ppc64lepython3.12-aiohttp3.14.3-1.el9appython3.12-aiohttp-3.14.3-1.el9ap.ppc64le.rpm
Red Hat Enterprise Linux9s390xpython3.12-aiohttp3.14.3-1.el9appython3.12-aiohttp-3.14.3-1.el9ap.s390x.rpm
Red Hat Enterprise Linux9x86_64python3.12-aiohttp3.14.3-1.el9appython3.12-aiohttp-3.14.3-1.el9ap.x86_64.rpm
Red Hat Enterprise Linux9aarch64python3.12-aiohttp-debuginfo3.14.3-1.el9appython3.12-aiohttp-debuginfo-3.14.3-1.el9ap.aarch64.rpm
Red Hat Enterprise Linux9ppc64lepython3.12-aiohttp-debuginfo3.14.3-1.el9appython3.12-aiohttp-debuginfo-3.14.3-1.el9ap.ppc64le.rpm
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25 Aug 2026 02:14Current
5.6Medium risk
Vulners AI Score5.6
CVSS 47.1
EPSS0.003
SSVC
3