CVE-2026-103239 MISP Tag Collection Save Allows Privilege Escalation via Sibling Model Injection

MISP contains a privilege escalation vulnerability in the tag collection creation and editing functionality. The affected actions accepted the full HTTP request payload and passed it to a bulk-association save operation, which writes not only the intended tag collection record but also any...

CVE-2026-103239

The MISP platform is vulnerable to a privilege escalation flaw in the tag collection creation and editing functionality (versions

CVE-2026-103239

MISP contains a privilege escalation vulnerability in the tag collection creation and editing functionality. The affected actions accepted the full HTTP request payload and passed it to a bulk-association save operation, which writes not only the intended tag collection record but also any...

EUVD-2026-89761

MISP contains a privilege escalation vulnerability in the tag collection creation and editing functionality. The affected actions accepted the full HTTP request payload and passed it to a bulk-association save operation, which writes not only the intended tag collection record but also any...

CVE-2026-103237 MISP: Nested Model Alias Key Bypasses Sanitization to Modify Cross-Tenant Rows

MISP contains an improper input validation vulnerability in its ORM save path. When a user submits data through various endpoints attribute add/edit, event edit, free-text import, sighting capture, shadow attribute proposal, event report creation, object reference add, user admin edit, the...

CVE-2026-103237

The MISP application (versions

CVE-2026-103237 MISP: Nested Model Alias Key Bypasses Sanitization to Modify Cross-Tenant Rows

MISP contains an improper input validation vulnerability in its ORM save path. When a user submits data through various endpoints attribute add/edit, event edit, free-text import, sighting capture, shadow attribute proposal, event report creation, object reference add, user admin edit, the...

CVE-2026-103237 MISP: Nested Model Alias Key Bypasses Sanitization to Modify Cross-Tenant Rows

MISP contains an improper input validation vulnerability in its ORM save path. When a user submits data through various endpoints attribute add/edit, event edit, free-text import, sighting capture, shadow attribute proposal, event report creation, object reference add, user admin edit, the...

EUVD-2026-89760

MISP contains an improper input validation vulnerability in its ORM save path. When a user submits data through various endpoints attribute add/edit, event edit, free-text import, sighting capture, shadow attribute proposal, event report creation, object reference add, user admin edit, the...

CVE-2026-103235 MISP Event Delegation Mass Assignment Allows Retargeting Delegation to Arbitrary Events

MISP contains a mass assignment vulnerability in the event delegation feature. When a user with delegation permission submits a delegation request, the application authorized the user against the event identified in the URL but then persisted the entire submitted record, including caller-supplied...

CVE-2026-103235 MISP Event Delegation Mass Assignment Allows Retargeting Delegation to Arbitrary Events

MISP contains a mass assignment vulnerability in the event delegation feature. When a user with delegation permission submits a delegation request, the application authorized the user against the event identified in the URL but then persisted the entire submitted record, including caller-supplied...

EUVD-2026-89728

MISP contains a mass assignment vulnerability in the event delegation feature. When a user with delegation permission submits a delegation request, the application authorized the user against the event identified in the URL but then persisted the entire submitted record, including caller-supplied...

CVE-2026-103235

MISP versions

CVE-2026-103235 MISP Event Delegation Mass Assignment Allows Retargeting Delegation to Arbitrary Events

MISP contains a mass assignment vulnerability in the event delegation feature. When a user with delegation permission submits a delegation request, the application authorized the user against the event identified in the URL but then persisted the entire submitted record, including caller-supplied...

PT-2026-103287

MISP renders the source field of a Galaxy Cluster as a clickable hyperlink whenever the stored value passes PHP's FILTER VALIDATE URL validation. Because FILTER VALIDATE URL accepts the javascript: URI scheme, a user with galaxy editor privileges on the local instance or on a synced instance coul...

PT-2026-103126

MISP contains a stored cross-site script XSS vulnerability in the event graph preview feature. The event graph preview image field was accepted and stored without server-side validation. On the client side, the stored value was rendered into an HTML img element's src attribute via string...

PT-2026-103288

MISP contains a stored cross-site scripting XSS vulnerability in the galaxy icon handling path. The icon field of a galaxy object was persisted without any server-side validation through the galaxy add, edit, and sync/import capture endpoints. The stored value was subsequently concatenated direct...

CVE-2026-103389: Improper Neutralization of Input During Web Page Generation

MISP contains a stored cross-site scripting XSS vulnerability in the galaxy icon handling path. The icon field of a galaxy object was persisted without any server-side validation through the galaxy add, edit, and sync/import capture endpoints. The stored value was subsequently concatenated direct...

CVE-2026-103388: Improper Neutralization of Input During Web Page Generation

MISP renders the source field of a Galaxy Cluster as a clickable hyperlink whenever the stored value passes PHP's FILTERVALIDATEURL validation. Because FILTERVALIDATEURL accepts the javascript: URI scheme, a user with galaxy editor privileges on the local instance or on a synced instance could...

CVE-2026-103321: Improper Neutralization of Input During Web Page Generation

MISP contains a stored cross-site script XSS vulnerability in the event graph preview feature. The event graph preview image field was accepted and stored without server-side validation. On the client side, the stored value was rendered into an HTML img element's src attribute via string...