The previewEventAttributes endpoint exposes event attribute data within MISP so an authorization bypass could expose sensitive indicator and attribute data to users who should not have access.
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Solution
The fix corrects the ACL permission key for the previewEventAttributes action from the malformed string 'theming_enabled*' to the correct 'theming_enabled', restoring the intended access control restriction so that only users holding the theming_enabled permission can invoke the endpoint, consistent with the adjacent previewEventObjects entry.
Workaround
No workaround given by the vendor.
| Link | Providers |
|---|---|
| https://github.com/MISP/MISP/commit/5ac8d1e4d |
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Tue, 22 Sep 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Tue, 22 Sep 2026 15:15:00 +0000
| Type | Values Removed | Values Added |
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| Description | A typo in the MISP ACLComponent access control configuration caused the ACL rule for the previewEventAttributes action to reference the permission string 'theming_enabled*' (with a trailing asterisk) instead of the correct 'theming_enabled'. In the MISP ACL system, the array values define which role or permission grants access to a given controller action. The adjacent entry previewEventObjects correctly uses ['theming_enabled'], confirming the intended restriction. The malformed key 'theming_enabled*' does not match any valid permission identifier, causing the access control check for previewEventAttributes to malfunction. Depending on the ACL evaluation logic, this could result in either unauthorized users gaining access to the previewEventAttributes endpoint (authorization bypass) or legitimate users being denied access (availability impact). The previewEventAttributes endpoint exposes event attribute data within MISP so an authorization bypass could expose sensitive indicator and attribute data to users who should not have access. | |
| Title | MISP ACLComponent: Typo in previewEventAttributes ACL key bypasses intended access restriction | |
| Weaknesses | CWE-285 | |
| References |
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| Metrics |
cvssV4_0
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Projects
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Status: PUBLISHED
Assigner: CIRCL
Published:
Updated: 2026-09-22T15:53:42.092Z
Reserved: 2026-09-22T14:59:19.797Z
Link: CVE-2026-95805
Updated: 2026-09-22T15:53:36.423Z
Status : Deferred
Published: 2026-09-22T16:18:24.290
Modified: 2026-09-22T16:18:24.423
Link: CVE-2026-95805
No data.
OpenCVE Enrichment
Updated: 2026-09-22T17:15:15Z