{"id":"CVE-2026-91857","aliases":["EUVD-2026-78348","GHSA-6wvj-vm6h-rf24"],"status":"published","title":"MISP: State-changing actions accessible via GET request enabling CSRF","description":"Affected versions of MISP expose several state-changing controller actions without restricting them to POST.\n\n\nThe affected actions are:\n\n\n\n - EventReportsController::purgeUnusedPictures()\n\n - NoticelistsController::enableNoticelist()\n\n - ServersController::removeOrphanedCorrelations()\n\n - WorkflowsController::rebuildRedis()\n\n\n\n\n\n\nThe patch adds allowMethod(['post']) to each action, preventing them from being triggered through ordinary GET requests.\n\n\nFor 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.\n\n\nBecause 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.\n\nVersion affected: ≤2.5.45","severity":{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00214,"percentile":0.11923,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-352"],"published":"2026-09-15T09:14:43Z","modified":"2026-10-28T02:30:44Z","products":[{"vendor":"misp","product":"misp"}],"references":[{"url":"https://github.com/MISP/MISP/commit/b4a5486b5","tags":["patch","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91857","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-6wvj-vm6h-rf24"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91857.json","tags":["advisory"]},{"url":"https://github.com/MISP/MISP","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-91857","title":"MISP: State-changing actions accessible via GET request enabling CSRF","description":"Affected versions of MISP expose several state-changing controller actions without restricting them to POST.\n\n\nThe affected actions are:\n\n\n\n - EventReportsController::purgeUnusedPictures()\n\n - NoticelistsController::enableNoticelist()\n\n - ServersController::removeOrphanedCorrelations()\n\n - WorkflowsController::rebuildRedis()\n\n\n\n\n\n\nThe patch adds allowMethod(['post']) to each action, preventing them from being triggered through ordinary GET requests.\n\n\nFor 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.\n\n\nBecause 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.\n\nVersion affected: ≤2.5.45","status":"published","published":"2026-09-15T09:14:43.722Z","modified":"2026-09-15T13:19:25.134Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"cna"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T14:19:53.115938Z"}],"euvd":[{"id":"EUVD-2026-78348","description":"Affected versions of MISP expose several state-changing controller actions without restricting them to POST.\n\n\nThe affected actions are:\n\n\n\n - EventReportsController::purgeUnusedPictures()\n\n - NoticelistsController::enableNoticelist()\n\n - ServersController::removeOrphanedCorrelations()\n\n - WorkflowsController::rebuildRedis()\n\n\n\n\n\n\nThe patch adds allowMethod(['post']) to each action, preventing them from being triggered through ordinary GET requests.\n\n\nFor 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.\n\n\nBecause 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.\n\nVersion affected: ≤2.5.45","status":"published","published":"2026-09-15T09:14:43Z","modified":"2026-09-15T13:19:25Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T17:28:18.438671Z"}],"ghsa":[{"id":"GHSA-6wvj-vm6h-rf24","title":"Affected versions of MISP expose several state-changing controller actions without restricting...","description":"Affected versions of MISP expose several state-changing controller actions without restricting them to POST.\n\n\nThe affected actions are:\n\n\n\n - EventReportsController::purgeUnusedPictures()\n\n - NoticelistsController::enableNoticelist()\n\n - ServersController::removeOrphanedCorrelations()\n\n - WorkflowsController::rebuildRedis()\n\n\n\n\n\n\nThe patch adds allowMethod(['post']) to each action, preventing them from being triggered through ordinary GET requests.\n\n\nFor 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.\n\n\nBecause 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.\n\nVersion affected: ≤2.5.45","status":"published","published":"2026-09-15T12:31:46Z","modified":"2026-09-15T12:31:54Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T15:11:54.134441Z"}],"nvd":[{"id":"CVE-2026-91857","description":"Affected versions of MISP expose several state-changing controller actions without restricting them to POST.\n\n\nThe affected actions are:\n\n\n\n - EventReportsController::purgeUnusedPictures()\n\n - NoticelistsController::enableNoticelist()\n\n - ServersController::removeOrphanedCorrelations()\n\n - WorkflowsController::rebuildRedis()\n\n\n\n\n\n\nThe patch adds allowMethod(['post']) to each action, preventing them from being triggered through ordinary GET requests.\n\n\nFor 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.\n\n\nBecause 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.\n\nVersion affected: ≤2.5.45","status":"published","published":"2026-09-15T10:17:06.267Z","modified":"2026-09-16T13:42:48.977Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"secondary"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T14:12:47.335523Z"}],"osv":[{"id":"CVE-2026-91857","title":"MISP: State-changing actions accessible via GET request enabling CSRF","description":"Affected versions of MISP expose several state-changing controller actions without restricting them to POST.\n\n\nThe affected actions are:\n\n\n\n - EventReportsController::purgeUnusedPictures()\n\n - NoticelistsController::enableNoticelist()\n\n - ServersController::removeOrphanedCorrelations()\n\n - WorkflowsController::rebuildRedis()\n\n\n\n\n\n\nThe patch adds allowMethod(['post']) to each action, preventing them from being triggered through ordinary GET requests.\n\n\nFor 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.\n\n\nBecause 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.\n\nVersion affected: ≤2.5.45","status":"published","published":"2026-09-15T09:14:43.722Z","modified":"2026-10-28T02:30:44.244615442Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T15:45:20.269367Z"}]}}