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openSUSE Python-Aiohttp Important Resource Issues Vuln 2026-21372

openSUSE Python-Aiohttp Important Resource Issues Vuln 2026-21372

Linuxsecurity •LinuxSecurity Advisories • July 21, 2026

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This update for python-aiohttp fixes the following issues

- CVE-2026-50269: improper validation of user-controlled strings allows for CRLF injection in multipart headers

- CVE-2026-54273: no limit in the HTTP/1 pipelined request queue can lead to excessive resource consumption

- CVE-2026-54274: incomplete websocket frame payloads can bypass memory use limits and cause a DoS via excessive

resource consumption (bsc#1268544).

- CVE-2026-54275: `server_hostname` TLS SNI check bypass when an existing connection is reused (bsc#1268549).

- CVE-2026-54277: `max_line_size` bypass when using the optimised C HTTP parser can lead to excessive resource

consumption (bsc#1268556).

- CVE-2026-54278: unread compressed request bodies can bypass `client_max_size` during cleanup and cause a DoS

- CVE-2026-54279: host-only cookies become domain cookies after `CookieJar` persistence (bsc#1268560).

- CVE-2026-54280: payload resources are not closed...

- openSUSE Leap 16.0:

python313-aiohttp-3.11.16-160000.6.1

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