CVE-2026-34515: AIOHTTP: UNC SSRF/NTLMv2 Credential Theft/Local File Read in static resource handler on Windows
Published Apr 1, 2026
·Updated
### 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. ----- Patch: https://github.com/aio-libs/aiohttp/commit/0ae2aa076c84573df83fc1fdc39eec0f5862fe3d
Affected Software
2 affected componentsFixes available
pip/aiohttp<=3.13.3
3.13.4
aiohttp aiohttp<3.13.4
Remediation
Event History
Apr 1, 2026
CVE Published
via MITRE·08:10 PM
Data Sourced
via MITRE·08:10 PM
DescriptionWeakness
Data Sourced
via NVD·09:16 PM
RemedyDescriptionSeverityWeaknessAffected Software
Advisory Published
via GitHub·09:26 PM
Data Sourced
via GitHub·09:26 PM
DescriptionWeaknessAffected Software