{"id":"CVE-2026-74922","aliases":["EUVD-2026-104099","GHSA-wpx6-cwp7-w9hm"],"status":"published","title":"Document Gallery 4.1 - 5.1.1 - Unauthenticated Document Thumbnail Replacement via Thumber Webhook Signature Bypass","description":"The Document Gallery WordPress plugin through 5.1.1 does not verify the signature on one of its unauthenticated webhook endpoints when no shared secret has been configured, which is the default state, allowing unauthenticated users to replace the thumbnail image the site publishes for any document.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00117,"percentile":0.01657,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-345"],"published":"2026-10-19T06:46:16Z","modified":"2026-10-19T21:02:51Z","products":[{"vendor":"dan rossiter","product":"document gallery"},{"vendor":"unknown","product":"document gallery"}],"references":[{"url":"https://wpscan.com/vulnerability/850aaa4e-82ff-479f-bdcd-6cb8089325bd/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74922"},{"url":"https://wpscan.com/vulnerability/850aaa4e-82ff-479f-bdcd-6cb8089325bd"},{"url":"https://github.com/advisories/GHSA-wpx6-cwp7-w9hm"}],"sources":{"cve":[{"id":"CVE-2026-74922","title":"Document Gallery 4.1 - 5.1.1 - Unauthenticated Document Thumbnail Replacement via Thumber Webhook Signature Bypass","description":"The Document Gallery WordPress plugin through 5.1.1 does not verify the signature on one of its unauthenticated webhook endpoints when no shared secret has been configured, which is the default state, allowing unauthenticated users to replace the thumbnail image the site publishes for any document.","status":"published","published":"2026-10-19T06:46:16.054Z","modified":"2026-10-19T09:31:21.524Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-345"],"updated_at":"2026-11-02T14:20:03.4818Z"}],"euvd":[{"id":"EUVD-2026-104099","description":"The Document Gallery WordPress plugin through 5.1.1 does not verify the signature on one of its unauthenticated webhook endpoints when no shared secret has been configured, which is the default state, allowing unauthenticated users to replace the thumbnail image the site publishes for any document.","status":"published","published":"2026-10-19T06:46:16Z","modified":"2026-10-19T09:31:21Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T16:59:51.629031Z"}],"ghsa":[{"id":"GHSA-wpx6-cwp7-w9hm","title":"The Document Gallery WordPress plugin through 5.1.1 does not verify the signature on one of its...","description":"The Document Gallery WordPress plugin through 5.1.1 does not verify the signature on one of its unauthenticated webhook endpoints when no shared secret has been configured, which is the default state, allowing unauthenticated users to replace the thumbnail image the site publishes for any document.","status":"published","published":"2026-10-19T09:32:29Z","modified":"2026-10-19T12:32:46Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-345"],"updated_at":"2026-11-02T15:13:56.45986Z"}],"nvd":[{"id":"CVE-2026-74922","description":"The Document Gallery WordPress plugin through 5.1.1 does not verify the signature on one of its unauthenticated webhook endpoints when no shared secret has been configured, which is the default state, allowing unauthenticated users to replace the thumbnail image the site publishes for any document.","status":"published","published":"2026-10-19T07:16:31.76Z","modified":"2026-10-19T21:02:51.987Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-345"],"updated_at":"2026-11-02T14:13:00.83844Z"}]}}