{"id":"CVE-2026-86783","aliases":["EUVD-2026-85045","GHSA-f7w9-vf85-gjj5"],"status":"published","title":"PostX \u003c 5.0.41 - Unauthenticated Custom Field Key Disclosure via REST API","description":"The Post Grid Gutenberg Blocks  WordPress plugin before 5.0.41 does not perform an authorization or post-visibility check on a REST API route that returns the custom field keys of a given post, allowing unauthenticated users to disclose the custom field key names of arbitrary posts, including private, draft, pending, scheduled and password-protected posts.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00345,"percentile":0.28371,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-200"],"published":"2026-09-23T06:00:19Z","modified":"2026-09-23T18:13:31Z","products":[{"vendor":"unknown","product":"post grid gutenberg blocks"}],"references":[{"url":"https://wpscan.com/vulnerability/719fc130-748b-4bad-8091-2858664299ed/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86783"},{"url":"https://wpscan.com/vulnerability/719fc130-748b-4bad-8091-2858664299ed"},{"url":"https://github.com/advisories/GHSA-f7w9-vf85-gjj5"}],"sources":{"cve":[{"id":"CVE-2026-86783","title":"PostX \u003c 5.0.41 - Unauthenticated Custom Field Key Disclosure via REST API","description":"The Post Grid Gutenberg Blocks  WordPress plugin before 5.0.41 does not perform an authorization or post-visibility check on a REST API route that returns the custom field keys of a given post, allowing unauthenticated users to disclose the custom field key names of arbitrary posts, including private, draft, pending, scheduled and password-protected posts.","status":"published","published":"2026-09-23T06:00:19.511Z","modified":"2026-09-23T10:55:10.369Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T13:49:42.666099Z"}],"euvd":[{"id":"EUVD-2026-85045","description":"The Post Grid Gutenberg Blocks  WordPress plugin before 5.0.41 does not perform an authorization or post-visibility check on a REST API route that returns the custom field keys of a given post, allowing unauthenticated users to disclose the custom field key names of arbitrary posts, including private, draft, pending, scheduled and password-protected posts.","status":"published","published":"2026-09-23T06:00:19Z","modified":"2026-09-23T10:55:10Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T17:28:01.283316Z"}],"ghsa":[{"id":"GHSA-f7w9-vf85-gjj5","title":"The Post Grid Gutenberg Blocks  WordPress plugin before 5.0.41 does not perform an authorization...","description":"The Post Grid Gutenberg Blocks  WordPress plugin before 5.0.41 does not perform an authorization or post-visibility check on a REST API route that returns the custom field keys of a given post, allowing unauthenticated users to disclose the custom field key names of arbitrary posts, including private, draft, pending, scheduled and password-protected posts.","status":"published","published":"2026-09-23T06:31:04Z","modified":"2026-09-23T12:32:13Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T15:12:20.494129Z"}],"nvd":[{"id":"CVE-2026-86783","description":"The Post Grid Gutenberg Blocks  WordPress plugin before 5.0.41 does not perform an authorization or post-visibility check on a REST API route that returns the custom field keys of a given post, allowing unauthenticated users to disclose the custom field key names of arbitrary posts, including private, draft, pending, scheduled and password-protected posts.","status":"published","published":"2026-09-23T06:17:04.13Z","modified":"2026-09-23T18:13:31.21Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:12:50.703874Z"}]}}