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Moderate severityGHSA Advisory· Published Jun 15, 2026· Updated Jun 15, 2026

aiohttp: Incomplete websocket frame payloads bypass memory limits

CVE-2026-54274

Description

Summary

If an attacker sends large incomplete websocket frame payloads, it may be possible to bypass the usual size limits on memory use.

Impact

If a web application has WebSocket endpoints, it may be possible for an attacker to execute a DoS attack through excessive memory use.

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Patch: https://github.com/aio-libs/aiohttp/commit/14b6ee851fb16ec199acb950de0c82d476799e7d

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
aiohttpPyPI
< 3.14.13.14.1

Affected products

30

Patches

Vulnerability mechanics

References

2

News mentions

1