PT-2026-49594 · Pypi · Aiohttp

Published 2026-06-15 · Updated 2026-06-15 · CVE-2026-54280

OSV

CVSS v4.0

1.7

Low

Base vector

AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U

Summary

Payload resources are not closed correctly when a client disconnects in the middle of a write.

Impact

If a payload is using an open file or similar limited resource, then an attacker may be able to cause resource starvation temporarily until garbage collection or similar closes the file.

---

Patch: https://github.com/aio-libs/aiohttp/commit/a762eda5242f6490d6ba667533193f8b473ad587

Fix

Improper Resource Release

Weakness Enumeration

CWE-404

Related Identifiers

CVE-2026-54280

GHSA-9X8Q-7H8H-WCW9

Affected Products

Aiohttp

References · 4

• https://osv.dev/vulnerability/GHSA-9x8q-7h8h-wcw9 · Vendor Advisory
• https://github.com/aio-libs/aiohttp/commit/a762eda5242f6490d6ba667533193f8b473ad587 · Note
• https://github.com/aio-libs/aiohttp · Note
• https://github.com/aio-libs/aiohttp/security/advisories/GHSA-9x8q-7h8h-wcw9 · Note