CVE Tools
Sign in

CVE-2026-34515

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

Published: Apr 1, 2026Updated: Apr 15, 2026 Sources: CVE List NVDCWE-36
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.4%
Top 65.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, on Windows the static resource handler may expose information about a NTLMv2 remote path. This issue has been patched in version 3.13.4.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-36CWE-918

Affected Products

aiohttpaio-libs
Library
OSS Libraries / web-framework
aiohttpaiohttp
Library
OSS Libraries / web-framework
aio-libsoss-projectOSS Librariesaka aiohttp, aiosmtpd, aiohttp session
aiohttposs-projectOSS Libraries

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

3 techniques
Command and Control
Discovery
Initial Access
View detailed technique mapping

References

https://github.com/aio-libs/aiohttp/security/advisories/GHSA-p998-jp59-783m
github.com
https://github.com/aio-libs/aiohttp/commit/0ae2aa076c84573df83fc1fdc39eec0f5862fe3d
github.com
https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4
github.com

Timeline

Published
Apr 1, 2026
Last Updated
Apr 15, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-34515 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows