HomeWordPress vulnerabilitiesJSM Show Post Metadata
JSM Show Post Metadata vulnerabilities
JSM Show Post Metadata has 1 known vulnerability in this database. The most recent published record is dated 23 Sep 2026.
- Known vulnerabilities
- 1
- Active installs
- 10,000+
- Latest version
- 4.9.1
- Last updated
- 27 Sep 2026
- Most recent
- 23 Sep 2026
Find it in your WordPress dashboard under Plugins. Severity is based on the CVSS score published with the CVE where one is available.
| Vulnerability | Severity | Affected | Fix | Published |
|---|---|---|---|---|
| Cross-site scripting (XSS) CVE-2026-88997 | Medium 6.8 | Before 4.9.1 | Fixed in 4.9.1 | 23 Sep 2026 |
Read the published descriptions
- CVE-2026-88997, 23 Sep 2026
- 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 record
What to do if you run JSM Show Post Metadata
If you run JSM Show Post Metadata, open WordPress and check the installed version in Plugins. Compare it with the affected versions in the vulnerability record. If a fixed version is available, take a current backup and update to that version or the latest supported release.
If no fixed version exists, consider disabling and removing the plugin or replacing it with a maintained alternative. After dealing with the affected software, check administrator users, unexpected file changes, redirects, unfamiliar pages and security logs for signs that the site may already have been altered.
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