GitHub Advisoryadvisory · PyPI
GHSA-p998-jp59-783m AIOHTTP affected by UNC SSRF/NTLMv2 Credential Theft/Local File Read in static resource handler on Windows
MEDIUM
Official page ↗
- Aliases
- CVE-2026-34515
- Ecosystem
- PyPI
- Packages
- aiohttp
- Severity
- Moderate
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U
- Weaknesses
- CWE-36, CWE-918
- Reviewed
- 2026-04-01
Affected packages
• PyPI aiohttp: < 3.13.4 → fixed in 3.13.4
Description
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
Related
Alias · CVE (1)
- CVE-2026-34515 AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. vulnerability
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