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CVE-2026-39962

LDAP injection in MISP ApacheAuthenticate when using a user-controlled Apache environment variable

Published: Apr 9, 2026Updated: Jun 22, 2026 Sources: CVE List NVDCWE-90
NVD MITRE
9.6CVSSCRITICAL
EPSS Score
0.3%
Top 73.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-90

Affected Products

mispmisp-project
On-prem
Security Products / vuln-mgmt-scanner
MISPMISP
On-premWeb App
Security Products / vuln-mgmt-scanner
misp-projectoss-projectSecurity Productsaka misp, misp
misposs-projectSecurity Products

Exploitability

Official Patch Available

References

https://github.com/MISP/MISP/commit/380ee4136a7d9ce2fe63fce06d517839f30aba10
github.com
https://github.com/MISP/MISP/commit/d7d671ea8f5822e91207dcad2003c35c30092a32
github.com
https://github.com/MISP/MISP/releases/tag/v2.5.36
github.com
and 1 more references View all →

Timeline

Published
Apr 9, 2026
Last Updated
Jun 22, 2026

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