TI-2026-63679 Aliases CVE-2026-95683 GHSA-83cf-9w8x-h48q

MISP Overmind Event View Discloses Report Content Bypassing Report-Level ACL

LOW 24CWE-639Published 2026-09-22 · Updated 2026-09-22

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

In MISP, the Overmind event view enriches an event with its most recent attached report for preview purposes. The enrichment logic fetched the report using only the event ID as the lookup condition, without applying the report's own distribution/ACL constraints. Because MISP reports carry an independent distribution setting that can be more restrictive than the parent event's distribution, an authenticated user who had read access to the event could retrieve and view a report whose distribution explicitly excluded that user. Additionally, the query did not filter out soft-deleted reports, allowing retrieval of reports that had been administratively removed. The result is an unauthorized disclosure of threat-intelligence report content to users who should not have access under the report's own access-control policy. The vulnerability requires an authenticated MISP user with at least read access to the affected event.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00389 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: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
MISP	MISP	before 2.5.47	2.5.47	Patch available	CNA

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.

CPE	Versions	Role	Vendor
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 · 2026-09-22
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-2026-63690 MISP: PHP phar stream wrapper enables deserialization and code execution via caller-influenced filesystem pathsPriority LOW 36
Show all 19 records →

Timeline

2026-10-02 Threatist record created from CVE-2026-95683
2026-10-03 Alias added: GHSA-83cf-9w8x-h48q

References

Patch 1

Security patch

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