GHSA-85rw-g4f4-jprr

Source

https://github.com/advisories/GHSA-85rw-g4f4-jprr

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-85rw-g4f4-jprr/GHSA-85rw-g4f4-jprr.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-85rw-g4f4-jprr

Aliases

CVE-2026-35563

Published

2026-06-01T09:31:11Z

Modified

2026-07-08T00:11:30Z

Severity

8.8 (High) CVSS_V4 - 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 CVSS Calculator

Summary

Apache Directory LDAP API lacks server certificate verification for LDAP hostnames

Details

It was identified that the LDAP client implementation in version 2.1.7 does not verify if the server certificate matches the intended LDAP hostname. While the underlying code validates the certificate chain against a trusted authority, the absence of endpoint identification allows a valid certificate issued for an entirely unrelated host to be improperly accepted. This oversight leaves the connection highly vulnerable to server impersonation and complete connection compromise.

The root cause of this vulnerability lies in the incomplete TLS server identity verification within the LDAP client implementation.

The attacker requires MITM capability on the network to exploit this vulnerability. This attacker must be able to present a certificate trusted by the client's configured trust store.

The hostname verification has been enforced in the new version of the LDAP API.

Database specific

{
    "cwe_ids":  [
        "CWE-297"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-07-07T23:46:48Z",
    "nvd_published_at":  "2026-06-01T08:16:20Z",
    "severity":  "HIGH"
}

References

Affected packages

Maven / org.apache.directory.api:api-ldap-client-api

Package

Name: org.apache.directory.api:api-ldap-client-api; View open source insights on deps.dev
Purl: pkg:maven/org.apache.directory.api/api-ldap-client-api

Affected ranges

Type: ECOSYSTEM
Events: Introduced

2.0.0

Fixed

2.1.8

Affected versions

2.*

2.0.0

2.0.0.AM1

2.0.0.AM2

2.0.0.AM3

2.0.0.AM4

2.0.1

2.0.2

2.1.0

2.1.1

2.1.2

2.1.3

2.1.4

2.1.5

2.1.6

2.1.7

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-85rw-g4f4-jprr/GHSA-85rw-g4f4-jprr.json"