JSM Show Post Metadata < 4.9.1 - Contributor+ Stored XSS via Custom Field Meta Key
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 6.8epss 0.3%
from disclosure to weapon0 days
Published on NVDSep 23
1st PoCSep 21
exploitation probability
0.3%top 80% of all CVEs
observed exploitation
nono source reports it
2 public exploit(s)
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.
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Affected products
Unknown · JSM Show Post Metadatapublic PoCs found — 2
githubgithub.com/pervinzahidli/CVE-2026-88997★ 0cve_referencewpscan.com/vulnerability/1699d3aa-29ca-4197-8e3b-0b03ecce751a/unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.