CVE-2026-88997
JSM Show Post Metadata < 4.9.1 - Contributor+ Stored XSS via Custom Field Meta Key
- State
- Published
- Severity
- 6.8 Medium
- Published
- Sep 23, 2026
- Updated
- Sep 23, 2026
- Reserved
- Sep 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.8 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
JSM Show Post MetadataUnknown |
|
References
- https://wpscan.com/vulnerability/1699d3aa-29ca-4197-8e3b-0b03ecce751a/exploitvdb-entrytechnical-description
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