MEDIUM

GHSA-p998-jp59-783m

AIOHTTP affected by UNC SSRF/NTLMv2 Credential Theft/Local File Read in static resource handler on Windows

Details

### Summary

On Windows the static resource handler may expose information about a NTLMv2 remote path.

### Impact

If an application is running on Windows, and using aiohttp's static resource handler (not recommended in production), then it may be possible for an attacker to extract the hash from an NTLMv2 path and then extract the user's credentials from there.

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Patch: https://github.com/aio-libs/aiohttp/commit/0ae2aa076c84573df83fc1fdc39eec0f5862fe3d

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI / aiohttp

Introduced in: 0 Fixed in: 3.13.4

Fix pip install --upgrade 'aiohttp>=3.13.4'

References

https://github.com/aio-libs/aiohttp/security/advisories/GHSA-p998-jp59-783m [WEB]
https://nvd.nist.gov/vuln/detail/CVE-2026-34515 [ADVISORY]
https://github.com/aio-libs/aiohttp/commit/0ae2aa076c84573df83fc1fdc39eec0f5862fe3d [WEB]
https://github.com/aio-libs/aiohttp [PACKAGE]
https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4 [WEB]