VULNERABILITY INTELLIGENCE
CVE-2026-55890
CVSS score4.8 MEDIUM
EPSS probability0.50%
CISA KEVNot currently listed
Published2026-07-10
Last modified2026-10-25
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Description
Grav is a file-based Web platform. Prior to 2.0.0-rc.9, Grav's incomplete fix for stored XSS through the Markdown media attribute action (CVE-2026-42841) leaves the sibling MediaObjectTrait::style method reachable through the same Markdown excerpt-action pipeline, allowing an editor to save Markdown image style parameters that are written into the rendered img style attribute without sanitization. This issue is fixed in version 2.0.0-rc.9.
Weakness classification
- security-advisories@github.com: CWE-79