[MEDIUM] Craft CMS: Sensitive File Disclosure / Server-Side File Read

PKSA-rvh7-y4k6-cn59 CVE-2026-55792 GHSA-287w-mxq6-x2cp

Affected version: >=5.0.0-RC1,<5.10.0|>=4.0.0-RC1,<4.18.0

Reported by:
GitHub

[HIGH] Craft CMS: DOM XSS via GitHub issue title in CraftSupport widget

PKSA-hm4p-n9yk-nz2c CVE-2026-55790 GHSA-24x4-j6x9-rfw5

Affected version: >=4.0.0-RC1,<4.17.15|>=5.0.0-RC1,<5.9.22

Reported by:
GitHub

[HIGH] Craft CMS: Missing peer-permission check in `AssetsController::actionDeleteFolder` allows deletion of other users' assets

PKSA-fd42-dyd4-g3dq CVE-2026-50284 GHSA-7h62-6v23-v8fm

Affected version: >=4.0.0-RC1,<4.17.15|>=5.0.0-RC1,<5.9.22

Reported by:
GitHub

[CRITICAL] Craft CMS: Blind SSRF and Arbitrary JavaScript Injection via Host Header Poisoning in actionResourceJs

PKSA-5xds-5mf3-ckxn CVE-2026-55791 GHSA-c55v-343g-5xff

Affected version: >=4.0.0-RC1,<4.18|>=5.0.0-RC1,<5.10

Reported by:
GitHub