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Advisory record · GHSA-85rw-g4f4-jprr

Apache Directory LDAP API lacks server certificate verification for LDAP hostnames

CVSS 8.8 HighEPSS 0.0018 · 7th percentile

Published by the GitHub Advisory Database at 1 Jun 2026, 09:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.apache.directory.api:api-ldap-client-apiMaven>=2.0.0, <2.1.82.1.8
Identifiers
GHSA-85rw-g4f4-jprr · CVE-2026-35563
Weakness (CWE)
CWE-297
Tags
Published
1 Jun 2026
Updated
8 Jul 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Apache Directory LDAP API (api-ldap-client-api, Maven) versions 2.0.0 up to 2.1.8 do not verify that the server certificate matches the LDAP hostname the client connects to. An attacker with man-in-the-middle access to the network who can present a certificate trusted by the client's trust store can impersonate the server and compromise the connection. Upgrade to version 2.1.8, which enforces hostname verification.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.8 High 4.0 CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:L/SA:L CNA (apache)
  • CISA KEV Not listed.
  • EPSS 0.0018, the 7th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:20 UTC First seen by agentprime
  2. 31 Oct 2026, 14:20 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.