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.
Metrics
Affected Vendors & Products
References
History
Mon, 28 Sep 2026 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Wordpress-extensions
Wordpress-extensions jsm Show Post Metadata |
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| Vendors & Products |
Wordpress-extensions
Wordpress-extensions jsm Show Post Metadata |
Wed, 23 Sep 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | JSM Show Post Metadata < 4.9.1 - Contributor+ Stored XSS via Custom Field Meta Key | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: WPScan
Published: 2026-09-23T06:00:21.546Z
Updated: 2026-09-23T10:53:26.953Z
Reserved: 2026-09-10T16:07:55.530Z
Link: CVE-2026-88997
Updated: 2026-09-23T10:34:12.771Z
Status : Deferred
Published: 2026-09-23T06:17:04.967
Modified: 2026-09-23T18:12:32.050
Link: CVE-2026-88997
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