CVE-2026-86452 MISP Unauthenticated Mail Endpoints Allow Unbounded Storage Consumption and Request Flooding

Affected versions of MISP permit unauthenticated or weakly constrained request paths to perform persistent work without adequate input bounds or rate limiting. The users/forgot password-reset endpoint accepted an attacker-controlled email value without first imposing a reasonable length bound or...

EUVD-2026-72398

Affected versions of MISP permit unauthenticated or weakly constrained request paths to perform persistent work without adequate input bounds or rate limiting. The users/forgot password-reset endpoint accepted an attacker-controlled email value without first imposing a reasonable length bound or...

CVE-2026-86451 MISP Event Graph Object Reference Lookup Exposes References from Unauthorized Objects

Affected versions of MISP allow authenticated users to retrieve object-reference records by UUID through EventGraphTool::getreferencedata without first checking whether the requester is authorized to view the object the reference belongs to. The vulnerable code queried ObjectReference.uuid direct...

EUVD-2026-72396

Affected versions of MISP allow authenticated users to retrieve object-reference records by UUID through EventGraphTool::getreferencedata without first checking whether the requester is authorized to view the object the reference belongs to. The vulnerable code queried ObjectReference.uuid direct...

CVE-2026-86451 MISP Event Graph Object Reference Lookup Exposes References from Unauthorized Objects

Affected versions of MISP allow authenticated users to retrieve object-reference records by UUID through EventGraphTool::getreferencedata without first checking whether the requester is authorized to view the object the reference belongs to. The vulnerable code queried ObjectReference.uuid direct...

CVE-2026-86451

MISP versions ≤2.5.45 contain an insecure direct object reference (IDOR) in EventGraphTool::get_reference_data(). Authenticated users could retrieve object-reference records by UUID without the system verifying that the requester had access to the parent object , allowing retrieval of reference d...

CVE-2026-86451 MISP Event Graph Object Reference Lookup Exposes References from Unauthorized Objects

Affected versions of MISP allow authenticated users to retrieve object-reference records by UUID through EventGraphTool::getreferencedata without first checking whether the requester is authorized to view the object the reference belongs to. The vulnerable code queried ObjectReference.uuid direct...

CVE-2026-86441 MISP Dashboard Organisation Widgets Bypass Organisation-Index Restrictions and Expose Hidden Organisation Data

Affected versions of MISP contain inconsistent authorization checks across dashboard widgets that display organisation information. Several organisation-related widgets did not honor Security.hideorganisationindexfromusers. As a result, authenticated users without the permsharinggroup permission...

CVE-2026-86441 MISP Dashboard Organisation Widgets Bypass Organisation-Index Restrictions and Expose Hidden Organisation Data

Affected versions of MISP contain inconsistent authorization checks across dashboard widgets that display organisation information. Several organisation-related widgets did not honor Security.hideorganisationindexfromusers. As a result, authenticated users without the permsharinggroup permission...

EUVD-2026-72374

Affected versions of MISP contain inconsistent authorization checks across dashboard widgets that display organisation information. Several organisation-related widgets did not honor Security.hideorganisationindexfromusers. As a result, authenticated users without the permsharinggroup permission...

CVE-2026-86441

MISP (≤2.5.45) contains inconsistent authorization checks in organisation-related dashboard widgets. Several widgets failed to honor the Security.hide_organisation_index_from_users setting, allowing authenticated users lacking the perm_sharing_group permission to enumerate organisations despite t...

CVE-2026-86441 MISP Dashboard Organisation Widgets Bypass Organisation-Index Restrictions and Expose Hidden Organisation Data

Affected versions of MISP contain inconsistent authorization checks across dashboard widgets that display organisation information. Several organisation-related widgets did not honor Security.hideorganisationindexfromusers. As a result, authenticated users without the permsharinggroup permission...

EUVD-2026-72372

Affected versions of MISP insufficiently validate URLs used by dashboard widgets, particularly the Button widget. The widget's URL is stored configuration controlled by a user. The previous renderer considered a URL safe if it appeared relative or if its parsed hostname matched the configured MIS...

CVE-2026-86440 MISP Dashboard Button Widget Allows Stored XSS via Unsafe javascript: and Backslash URLs

Affected versions of MISP insufficiently validate URLs used by dashboard widgets, particularly the Button widget. The widget's URL is stored configuration controlled by a user. The previous renderer considered a URL safe if it appeared relative or if its parsed hostname matched the configured MIS...

CVE-2026-86440 MISP Dashboard Button Widget Allows Stored XSS via Unsafe javascript: and Backslash URLs

Affected versions of MISP insufficiently validate URLs used by dashboard widgets, particularly the Button widget. The widget's URL is stored configuration controlled by a user. The previous renderer considered a URL safe if it appeared relative or if its parsed hostname matched the configured MIS...

CVE-2026-86440 MISP Dashboard Button Widget Allows Stored XSS via Unsafe javascript: and Backslash URLs

Affected versions of MISP insufficiently validate URLs used by dashboard widgets, particularly the Button widget. The widget's URL is stored configuration controlled by a user. The previous renderer considered a URL safe if it appeared relative or if its parsed hostname matched the configured MIS...

CVE-2026-86440

MISP 's dashboard Button widget is affected by a stored XSS caused by insufficient URL validation. The prior renderer treated a URL as safe if it appeared relative or matched the configured MISP hostname, but failed to reject dangerous schemes such as javascript: or backslash-based authority form...

CVE-2026-86419 MISP Insufficient Outbound URL Validation Allows SSRF and Credential Disclosure via Feed Redirects and TAXII Discovery

Affected versions of MISP contain insufficient validation of server-side outbound HTTP destinations in feed retrieval and TAXII discovery functionality. In feed processing, redirects were followed without validating the redirect scheme or destination. The original request headers were reused acro...

CVE-2026-86419 MISP Insufficient Outbound URL Validation Allows SSRF and Credential Disclosure via Feed Redirects and TAXII Discovery

Affected versions of MISP contain insufficient validation of server-side outbound HTTP destinations in feed retrieval and TAXII discovery functionality. In feed processing, redirects were followed without validating the redirect scheme or destination. The original request headers were reused acro...

CVE-2026-86419

MISP versions ≤2.5.45 contain insufficient validation of outbound HTTP destinations in feed retrieval and TAXII discovery . In feed processing, redirects were followed without validating the scheme or destination, causing configured authentication headers and API credentials to be forwarded to di...