Dashboard / CVE-2026-34525

CVE-2026-34525

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 63/100
Published: 2026-04-01 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: X
AT: Present
VC: None
VI: Low
VA: None

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, multiple Host headers were allowed in aiohttp. This issue has been patched in version 3.13.4.

Weakness Classification (2)

Affected Software (1)

VendorProductVersion
aiohttp aiohttp < 3.13.4

References & Advisories (4)

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

6.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.30%
Raw Score 0.002990
Percentile 22.6%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00299
2026-10-28
0.00288

Intelligence Sources

nvd ref →

External Links