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GHSA-cq5v-8q36-5273

HighCVSS 7.1 / 10
Published Aug 3, 2026·Last modified Aug 3, 2026
Affected Components(0)

No affected components available

Description

Summary

An out-of-bounds heap read could occur in the C response parser while building an error message for a malformed response.

Impact

An attacker controlled server, or possibly an accidental response could trigger a DoS in the client.

Workaround

If unable to upgrade, the Python parser is unaffected and can be used with AIOHTTP_NO_EXTENSIONS=1.


Patch: https://github.com/aio-libs/aiohttp/commit/49f65d54150397892f7bcc4aae887767d51c322d

Risk Scores
Base Score
7.1

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights.

Threat Intelligence
4.9

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.30%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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