Dashboard / CVE-2026-71290

CVE-2026-71290

CRITICAL
INFO Priority: 0.03 BB Relevance: 78/100
Published: 2026-08-11 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: High
A: None

Description

Improper TLS hostname verification vulnerability in Apache HttpComponents Client 5.4 or newer. HostnameVerificationPolicy#BUILTIN setting has no effect when used with the async version of HttpClient. An attacker that can intercept and modify traffic between the client and the server can impersonate the server by presenting a valid certificate for a different domain.  Please note the classic version of HttpClient is not affected by this vulnerability.  Affected users are recommended to upgrade to at least version 5.6.4, which fixes the issue.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
apache httpclient 5.4 – 5.6.4

References & Advisories (2)

Bug Bounty Relevance

78 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS — Exploitation Probability

0.33%
Raw Score 0.003310
Percentile 26.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00331
2026-10-28
0.00331

Intelligence Sources

nvd ref →

External Links