CVE-2026-39962

HIGH EPSS 26.3%
Published Apr 9, 20262mo ago · Modified Jun 22, 20261w ago
8.8 CVSS 4.0
High
Find Similar
Published Apr 9, 2026 2mo ago
Last Modified Jun 22, 2026 1w ago

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 Details

Base Score
8.8
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:L/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction A
Scope X

Threat Intelligence

EPSS Exploit Probability
26.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-90

Affected Products 1

VendorProductVersionRange
misp-projectmisp* <2.5.36

References 4

  • github.com https://github.com/MISP/MISP/commit/380ee4136a7d9ce2fe63fce06d517839f30aba10
    Patch
  • github.com https://github.com/MISP/MISP/commit/d7d671ea8f5822e91207dcad2003c35c30092a32
    Patch
  • github.com https://github.com/MISP/MISP/releases/tag/v2.5.36
    ProductRelease Notes
  • github.com https://github.com/MISP/MISP/security/advisories/GHSA-mc53-48w8-9g63
    Vendor Advisory

Remediation

  • github.com https://github.com/MISP/MISP/commit/380ee4136a7d9ce2fe63fce06d517839f30aba10
    Patch
  • github.com https://github.com/MISP/MISP/commit/d7d671ea8f5822e91207dcad2003c35c30092a32
    Patch