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CVE-2026-39962 Details

Description

MISP is an open source threat intelligence and sharing platform. Prior to 2.5.36, improper neutralization of special elements in an LDAP query in ApacheAuthenticate.php allows LDAP injection via an unsanitized username value when ApacheAuthenticate.apacheEnv is configured to use a user-controlled server variable instead of REMOTE_USER (such as in certain proxy setups). An attacker able to control that value can manipulate the LDAP search filter and potentially bypass authentication constraints or cause unauthorized LDAP queries. This vulnerability is fixed in 2.5.36.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.6 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/MISP/MISP/commit/380ee4136a7d9ce2fe63fce06d517839f30aba10	[email protected]	Patch
https://github.com/MISP/MISP/commit/d7d671ea8f5822e91207dcad2003c35c30092a32	[email protected]	Patch
https://github.com/MISP/MISP/releases/tag/v2.5.36	[email protected]	ProductRelease Notes
https://github.com/MISP/MISP/security/advisories/GHSA-mc53-48w8-9g63	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-90	Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')	[email protected]

Affected Products

Product	Versions
misp-project misp	< 2.5.36
CPE cpe:2.3:a:misp-project:misp:::::::: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 22, 2026	CPE Deprecation Remap	[email protected]
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Apr 23, 2026	Initial Analysis	[email protected]
Apr 9, 2026	New CVE Received	[email protected]