6.8
Medium
CVE-2026-88997 The JSM Show Post Metadata WordPress plugin before 4.9.1 does not properly escape a post meta key before outputting it…
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| JSM Show Post Metadata 4.9 | earliest → < 4.9.1 | 4.9.1 |