CVE WatchJul 15, 2026

CVE-2026-40542

Missing critical step in authentication in Apache HttpClient 5.6 allows an attacker to cause the client to accept SCRAM-SHA-256 authenticati

CVSS

7.3

High

EPSS

0.5%

p37

KEV

—

Exploit Today

0-100

Published: Apr 22, 2026 · Last modified: Jul 15, 2026 · CWE-304 · CWE-325

EPSS · 30d

0.5%EPSS · 30 days0.5%

2026-06-302026-07-16

Technical description

Missing critical step in authentication in Apache HttpClient 5.6 allows an attacker to cause the client to accept SCRAM-SHA-256 authentication without proper mutual authentication verification. Users are recommended to upgrade to version 5.6.1, which fixes this issue.

Official references

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