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TI-2026-76314 Aliases CVE-2026-112178GHSA-9h3q-39v8-fmg5

Missing authorization in MISP proposal visibility exposes shadow attributes

Priority LOW 31CWE-862Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

MISP versions before 2.5.48 contain a missing authorization flaw in the proposal (shadow attribute) visibility check, classified as CWE-862. The check accepts any attribute or object that carries one of the user's sharing groups without verifying the distribution level, so a user in a sharing group can view proposals on attributes restricted to distribution levels 1 to 3. The owning organisation is also denied access to proposals on its own organisation-only attributes. An authenticated remote user with low privileges can view proposed attribute changes they should not be able to see, with no user interaction needed.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

MISP contains an access control flaw in the proposal (shadow attribute) visibility logic. The authorization check accepted any attribute or object carrying one of the user's sharing groups without verifying the distribution level, and denied the owning organisation access to proposals on its own organisation-only attributes. - A user belonging to a sharing group could view proposals on attributes or objects with that sharing group, regardless of the attribute's distribution level (levels 1-3 should restrict visibility) - The owning organisation could not view proposals on its own org-only attributes Security impact: Unauthorized disclosure of proposed attribute changes to users who should not have access based on distribution level restrictions. Affected: <2.5.48

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0023 13th percentileScored 2026-11-07
Fix Fixed MISP (MISP): 2.5.48

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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 2.5.482.5.48Patch availableCNA
  • MISP VendorMISP Affected before 2.5.48 Fixed in 2.5.48 Patch available CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:misp:misp:*:*:*:*:*:*:*:*——MISP
  • cpe:2.3:a:misp:misp:*:*:*:*:*:*:*:* Versions — — ·MISP

Remediation

Upgrade MISP to version 2.5.48 or later, which fixes the issue. The sources list no fixed version for MISP beyond 2.5.48.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA MISP (MISP) Fixed in 2.5.48

Fixed in the same release

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

  • Release ·

    MISP 2.5.48

    6 records Highest priority Priority LOW 6 LOW

    Other records, highest priority first

    • TI-2026-76319 MISP server settings lookup exposes configuration secretsPriority LOW 31
    • TI-2026-76320 MISP leaks redacted module settings and lets users edit CLI-only onesPriority LOW 24
    • TI-2026-76315 Non-exportable tags leak to remote MISP instances during event syncPriority LOW 24
    Show all 6 records →

Timeline

  1. 2026-10-19 Threatist record created from CVE-2026-112178
  2. 2026-10-19 Alias added: GHSA-9h3q-39v8-fmg5
  3. 2026-10-19 CISA SSVC decision points changed
  4. 2026-10-19 Priority changed: MEDIUM → LOW

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