The JSM Show Post Metadata WordPress plugin before 4.9.1 does not properly escape a post meta key before outputting it into an inline event-handler attribute in an admin-facing meta box, allowing users with contributor-level access and above to inject arbitrary JavaScript that executes in the session of a higher-privileged user who reviews the affected post.
CVE-2026-88997
NONE
Updated Sep 23, 2026
Meta
CVE Details
CVE ID
CVE-2026-88997
Published Date
Sep 23, 2026
Vendor
Meta
Severity
NONE
Impact
Minimal impact
Source
View Advisory