CVE-2026-54280: aiohttp: Payload Response Resources Are Not Closed After Mid-Body Disconnect

June 15, 2026

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

References

github.com/advisories/GHSA-9x8q-7h8h-wcw9
github.com/aio-libs/aiohttp/commit/a762eda5242f6490d6ba667533193f8b473ad587
github.com/aio-libs/aiohttp/security/advisories/GHSA-9x8q-7h8h-wcw9
nvd.nist.gov/vuln/detail/CVE-2026-54280

Code Behaviors & Features

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