CVE-2026-39962 | THREATINT

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.

PUBLISHED Reserved 2026-04-07 | Published 2026-04-09 | Updated 2026-04-10 | Assigner GitHub_M

HIGH: 8.8CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:L/SC:H/SI:H/SA:H

Problem types

CWE-90: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')

Product status

< 2.5.36

affected

References

github.com/MISP/MISP/security/advisories/GHSA-mc53-48w8-9g63

github.com/...ommit/380ee4136a7d9ce2fe63fce06d517839f30aba10

github.com/...ommit/d7d671ea8f5822e91207dcad2003c35c30092a32

github.com/MISP/MISP/releases/tag/v2.5.36

cve.org (CVE-2026-39962)

nvd.nist.gov (CVE-2026-39962)

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