CVE-2026-112951Medium· 5.4▾ TwilightPoC availableApostropheCMS is an open-source Node.js content management system. Prior to 4.34.0, the color field accepts trailing content after a valid rgb() or hsl() prefix because its TinyColor validation does not require the entire value to match …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 29.7 · likelihood 0 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Exploit / PoC code exists
ApostropheCMS is an open-source Node.js content management system. Prior to 4.34.0, the color field accepts trailing content after a valid rgb() or hsl() prefix because its TinyColor validation does not require the entire value to match a color. An authenticated user with edit rights can store arbitrary HTML after a valid color prefix. When the stored value is rendered, the payload executes, resulting in stored XSS. This issue is fixed in version 4.34.0.
apostrophe < 4.34.0Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-112958Medium· 5.4ApostropheCMS: Stored XSS via Unescaped Widget Style Attribute Serialization
CVE-2026-112957Medium· 4.3ApostropheCMS: GET /api/v1/@apostrophecms/page/:id bypasses viewRole restriction and exposes viewPermission-gated fields to lower-privileged users
CVE-2026-113649Medium· 6.5ApostropheCMS: Import API bypasses publication roles for protected content
CVE-2026-112952Medium· 4.3ApostropheCMS: POST /api/v1/@apostrophecms/doc/slugTaken discloses existence of private/admin-only content to any authenticated user
CVE-2026-112954Medium· 5.3ApostropheCMS: Unauthenticated publicApiProjection bypass via search and sort query builders in the public REST API
CVE-2026-112953Medium· 6.0ApostropheCMS: Exposure of Sensitive Information via predictable export filenames