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GHSA-mq44-7p77-q5h7 on CTRL-OS 26.05

Aliases: GHSA-mq44-7p77-q5h7, CVE-2026-59881

Packages: python3Packages.aiohttp

Status: Plausible

Advisory Information

Summary

The client accepts and decompresses frames with the RSV1 bit set even when the permessage-deflate extension was not negotiated.

Impact

A client may unexpectedly decompress WebSocket frames when explicitly opted out. This could lead to additional CPU/memory consumption, but is unlikely to be a significant issue unless a zip bomb vulnerability or similar is also present.

Patch: https://github.com/aio-libs/aiohttp/commit/47fb6ae354d4fa22048f4dbe7dbf82b625f0a2f6

Updates

2026-07-27 23:20 CEST

Metadata changes:

  • Status for package python3Packages.aiohttp: “Plausible”

2026-07-27 18:50 CEST

Metadata changes:

  • Status for package python3Packages.aiohttp: “New”