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CVE PROGRAM SOURCE RECORD5.1 Medium

CVE-2026-64628

Grav Stored Cross-Site Scripting via Shortcode Attribute Handlers

Description

Grav contains a stored cross-site scripting vulnerability in shortcode-core attribute handlers where the XSS detection scan only matches payloads containing literal angle brackets, allowing shortcode parameters to bypass validation. Attackers with admin.pages permission can inject malicious JavaScript through shortcode attributes that execute in any viewer's browser, including administrators, enabling session hijacking via admin nonce theft.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

getgrav grav

Default version status: unaffected

  • 0 to ≤ 6.2.1affected

References