Is aiohttp affected by CVE-2026-54280?

PyPI aiohttp is affected in <3.14.1.

Is CVE-2026-54280 being exploited?

Not on the CISA KEV list. EPSS exploit probability is not available.

low

CVE-2026-54280

Q: Is CVE-2026-54280 being exploited?

Not on the CISA KEV list. EPSS exploit probability is not available.

PyPI · aiohttp

Summary

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

Severity: low
Also known as: GHSA-9x8q-7h8h-wcw9
Published: 2026-06-15

References

https://github.com/aio-libs/aiohttp/security/advisories/GHSA-9x8q-7h8h-wcw9
https://github.com/aio-libs/aiohttp/commit/a762eda5242f6490d6ba667533193f8b473ad587
https://github.com/aio-libs/aiohttp

Related advisories

CVE-2025-69223 — high · PyPI/aiohttp
CVE-2026-54274 — medium · PyPI/aiohttp
CVE-2026-54273 — medium · PyPI/aiohttp
CVE-2026-54278 — medium · PyPI/aiohttp
CVE-2026-54277 — medium · PyPI/aiohttp
CVE-2026-54276 — medium · PyPI/aiohttp
CVE-2026-47265 — medium · PyPI/aiohttp
CVE-2026-34993 — medium · PyPI/aiohttp

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.