5.3

CVE-2026-91857

MISP: State-changing actions accessible via GET request enabling CSRF

Affected versions of MISP expose several state-changing controller actions without restricting them to POST.


The affected actions are:



 - EventReportsController::purgeUnusedPictures()

 - NoticelistsController::enableNoticelist()

 - ServersController::removeOrphanedCorrelations()

 - WorkflowsController::rebuildRedis()






The patch adds allowMethod(['post']) to each action, preventing them from being triggered through ordinary GET requests.


For purgeUnusedPictures(), the corresponding UI previously used $.get(). The fix converts that request to POST and supplies X-CSRF-Token, while the controller enables header-only CSRF validation for that AJAX action.


Because GET requests can be induced cross-origin through links, images, redirects, or navigation, accepting GET for these state-changing operations can let an attacker trigger them using the authenticated victim's session.

Version affected: ≤2.5.45
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerMISP
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Produkt MISP
Version 0
Version < 2.5.46
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.068
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
5a6e4751-2f3f-4070-9419-94fb35b644e8 5.3 0 0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE-352 Cross-Site Request Forgery (CSRF)

The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.

https://github.com/MISP/MISP/commit/b4a5486b5