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TI-2026-63690 Aliases CVE-2026-95806GHSA-8rgx-3gvf-26gg

MISP: PHP phar stream wrapper enables deserialization and code execution via caller-influenced filesystem paths

Priority LOW 36CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

MISP ships with PHP's phar stream wrapper registered in both its web entry point and its console entry point.  The phar stream wrapper causes PHP to treat a phar archive as a directory, which has two security consequences:    - any filesystem operation on a caller-influenced path that resolves to a phar archive triggers an implicit unserialize() call, creating a deserialization sink;  - a relocated application root can reach executable code inside an uploaded phar file, enabling arbitrary code execution as the web user. No component of MISP, the vendored CakePHP framework, or any runtime-loaded library reads or constructs phar archives. The wrapper therefore serves no legitimate purpose in the MISP runtime and exists solely as an available primitive for an attacker who can influence a filesystem path argument.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00392 33rd percentileScored 2026-11-07
Fix Fixed MISP (MISP): 2.5.47

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MISPMISPbefore 2.5.472.5.47Patch availableCNA
  • MISP VendorMISP Affected before 2.5.47 Fixed in 2.5.47 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:misp-project:misp:*:*:*:*:*:*:*:*——Misp-project
  • cpe:2.3:a:misp-project:misp:*:*:*:*:*:*:*:* Versions — — ·Misp-project

Remediation

  • Fix · CNA MISP (MISP) Fixed in 2.5.47

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    MISP 2.5.47

    19 records Highest priority Priority LOW 19 LOW

    Other records, highest priority first

    • TI-2026-63688 MISP: Disabled-user check ineffective in pre-authentication TOTP login branchPriority LOW 37
    • TI-2026-63677 MISP Unauthenticated Blind SSRF via XML Body ProcessingPriority LOW 37
    • TI-2026-63684 MISP Path Traversal in OrgImgHelper findOrgImage via Crafted Organization NamePriority LOW 31
    Show all 19 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-95806
  2. 2026-10-03 Alias added: GHSA-8rgx-3gvf-26gg

References

Patch 1

  • TI-2025-41517 In MISP before 2.5.28, app/View/Elements/Workflows/executionPath.ctp allows XSS in the workflow execution path. CVSS 3.1CRITICAL 9.0
  • TI-2026-65744 MISP TOTP Code Replay Allows Duplicate Authentication Within Validity Period CVSS 4.0CRITICAL 9.3
  • TI-2026-54145 Path Traversal in MISP Object Template Resolution During STIX Import and Export in misp-stix library CVSS 4.0HIGH 8.8
  • TI-2020-10250 MISP MISP-maltego 1.4.4 incorrectly shares a MISP connection across users in a remote-transform use case. CVSS 3.1CRITICAL 9.8
  • TI-2026-59159 MISP Unauthenticated Mail Endpoints Allow Unbounded Storage Consumption and Request Flooding CVSS 4.0HIGH 8.7
  • TI-2026-58541 MISP LDAP and LinOTP Authentication Bypass via Empty or Invalid Credentials CVSS 4.0CRITICAL 9.5
See all 182 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences