{"id":"CVE-2026-88997","aliases":["EUVD-2026-85052","GHSA-w38r-xjmg-mmg7"],"status":"published","title":"JSM Show Post Metadata \u003c 4.9.1 - Contributor+ Stored XSS via Custom Field Meta Key","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.","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-09","score":0.00431,"percentile":0.37599,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-79"],"published":"2026-09-23T06:00:21Z","modified":"2026-09-23T18:12:32Z","exploits":[{"source":"pocgithub","id":"pervinzahidli/CVE-2026-88997","title":"pervinzahidli/CVE-2026-88997","date":"2026-09-21","url":"https://github.com/pervinzahidli/CVE-2026-88997"}],"products":[{"vendor":"js morisset","product":"jsm show post metadata"},{"vendor":"unknown","product":"jsm show post metadata"}],"references":[{"url":"https://wpscan.com/vulnerability/1699d3aa-29ca-4197-8e3b-0b03ecce751a/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88997"},{"url":"https://wpscan.com/vulnerability/1699d3aa-29ca-4197-8e3b-0b03ecce751a"},{"url":"https://github.com/advisories/GHSA-w38r-xjmg-mmg7"}],"sources":{"cve":[{"id":"CVE-2026-88997","title":"JSM Show Post Metadata \u003c 4.9.1 - Contributor+ Stored XSS via Custom Field Meta Key","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.","status":"published","published":"2026-09-23T06:00:21.546Z","modified":"2026-09-23T10:53:26.953Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium","assessor":"adp"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:42:04.39372Z"}],"euvd":[{"id":"EUVD-2026-85052","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.","status":"published","published":"2026-09-23T06:00:21Z","modified":"2026-09-23T10:53:26Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T17:28:01.283316Z"}],"ghsa":[{"id":"GHSA-w38r-xjmg-mmg7","title":"The JSM Show Post Metadata WordPress plugin before 4.9.1 does not properly escape a post meta key...","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.","status":"published","published":"2026-09-23T06:31:04Z","modified":"2026-09-23T12:31:11Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:12:19.869437Z"}],"nvd":[{"id":"CVE-2026-88997","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.","status":"published","published":"2026-09-23T06:17:04.967Z","modified":"2026-09-23T18:12:32.05Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:50.703874Z"}]}}