View at Official debian advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2026-40542 unimportant priority: Debian including 1 source packages (httpcomponents-client), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.
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.