[LOW] October CMS: PHP Object Injection via Backend Widget Session Storage

PKSA-syjw-hb9p-2d5m CVE-2026-49400 GHSA-2ff2-mx52-q8wp

Affected version: >=4.0.0,<4.2.23|<3.7.17

Reported by:
GitHub

[LOW] October CMS: Safe Mode Sandbox Bypass via Session Store and Forwarded Builder Calls

PKSA-m19v-7rfv-5pmv CVE-2026-46696 GHSA-xv9m-fm3w-8w5x

Affected version: >=4.0.0,<4.2.23|<3.7.17

Reported by:
GitHub

[LOW] October CMS: Editor Sub-Permission Bypass for Asset and Blueprint File Operations

PKSA-h2tj-db1h-m5mf CVE-2026-29179 GHSA-jvwg-phxx-j3rp

Affected version: <3.7.16|>=4.0.0,<4.1.16

Reported by:
GitHub

[LOW] October CMS: Reflected XSS via DataTable Form Widget

PKSA-drxd-zbt8-s1kh CVE-2026-27937 GHSA-jj38-h5w5-mvpf

Affected version: >=4.0.0,<4.1.16|<3.7.16

Reported by:
GitHub

[MEDIUM] October CMS has Safe Mode Bypass via CSS Preprocessor Compilers

PKSA-4k1j-qzgm-rvr3 CVE-2026-26067 GHSA-3888-q23f-x7qh

Affected version: >=4.0.0,<4.1.10|<3.7.14

Reported by:
GitHub

[MEDIUM] October CMS has Stored XSS in Event Log Mail Preview

PKSA-57nm-kh7g-ddrg CVE-2026-24907 GHSA-j4j5-9x6g-rgxc

Affected version: <=3.7.13|>=4.0.0,<=4.1.9

Reported by:
GitHub

[MEDIUM] October CMS has Stored XSS in Backend Editor Markup Classes

PKSA-44b4-zdw9-q1j5 CVE-2026-24906 GHSA-6qmh-j78v-ffp7

Affected version: <=3.7.13|>=4.0.0,<=4.1.9

Reported by:
GitHub

[MEDIUM] October CMS Vulnerable to Stored XSS via Branding Styles

PKSA-bbp3-wdjz-b51v CVE-2025-61676 GHSA-wvpq-h33f-8rp6

Affected version: >=4.0.0,<=4.0.11|<=3.7.12

Reported by:
GitHub

[MEDIUM] October CMS Vulnerable to Stored XSS via Editor and Branding Styles

PKSA-4qp4-vb8r-g3zj CVE-2025-61674 GHSA-gxxc-m74c-f48x

Affected version: >=4.0.0,<=4.0.11|<=3.7.12

Reported by:
GitHub

[LOW] October CMS Allows Unprotected SVG Rename in Media Manager

PKSA-q2z3-dfft-h9n9 CVE-2024-51991 GHSA-96hh-8hx5-cpw7

Affected version: <3.7.5

Reported by:
GitHub

[HIGH] October CMS upload process vulnerable to RCE via Race Condition

PKSA-yr75-7y9f-cxw9 CVE-2022-24800 GHSA-8v7h-cpc2-r8jp

Affected version: >=2.0.0,<2.2.15|>=1.1.0,<1.1.12|<1.0.476

Reported by:
GitHub

[MEDIUM] Missing server signature validation in OctoberCMS

PKSA-9y13-4h42-rz75 CVE-2022-23655 GHSA-53m6-44rc-h2q5

Affected version: <1.0.475|>=1.1.0,<1.1.11

Reported by:
GitHub