{"id":"CVE-2017-20207","aliases":["EUVD-2017-18923","GHSA-vv63-gqpw-3x4p"],"status":"published","title":"Flickr Gallery \u003c= 1.5.2 - Unauthenticated PHP Object Injection","description":"The Flickr Gallery plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 1.5.2 via deserialization of untrusted input from the `pager ` parameter. This allows unauthenticated attackers to inject a PHP Object. Attackers were actively exploiting this vulnerability with the WP_Theme() class to create backdoors.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00735,"percentile":0.54869,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2025-10-18T03:33:24Z","modified":"2026-06-17T01:15:24Z","products":[{"vendor":"dan coulter","product":"flickr gallery"},{"vendor":"dancoulter","product":"flickr_gallery"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/b52ae51d-7b9a-4047-82bf-723ea87d2375?source=cve","tags":["Third Party Advisory"]},{"url":"https://www.wordfence.com/blog/2017/10/3-zero-day-plugin-vulnerabilities-exploited-wild/","tags":["Press/Media Coverage","Third Party Advisory"]},{"url":"https://plugins.trac.wordpress.org/changeset/1737576/flickr-gallery","tags":["Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-20207"},{"url":"https://www.wordfence.com/blog/2017/10/3-zero-day-plugin-vulnerabilities-exploited-wild"},{"url":"https://github.com/advisories/GHSA-vv63-gqpw-3x4p"}],"sources":{"cve":[{"id":"CVE-2017-20207","title":"Flickr Gallery \u003c= 1.5.2 - Unauthenticated PHP Object Injection","description":"The Flickr Gallery plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 1.5.2 via deserialization of untrusted input from the `pager ` parameter. This allows unauthenticated attackers to inject a PHP Object. Attackers were actively exploiting this vulnerability with the WP_Theme() class to create backdoors.","status":"published","published":"2025-10-18T03:33:24.941Z","modified":"2026-04-08T17:17:08.314Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:33:11.59359Z"}],"euvd":[{"id":"EUVD-2017-18923","description":"The Flickr Gallery plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 1.5.2 via deserialization of untrusted input from the `pager ` parameter. This allows unauthenticated attackers to inject a PHP Object. Attackers were actively exploiting this vulnerability with the WP_Theme() class to create backdoors.","status":"published","published":"2025-10-18T03:33:24Z","modified":"2026-04-08T17:17:08Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:24:43.773985Z"}],"ghsa":[{"id":"GHSA-vv63-gqpw-3x4p","title":"The Flickr Gallery plugin for WordPress is vulnerable to PHP Object Injection in versions up to,...","description":"The Flickr Gallery plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 1.5.2 via deserialization of untrusted input from the `pager ` parameter. This allows unauthenticated attackers to inject a PHP Object. Attackers were actively exploiting this vulnerability with the WP_Theme() class to create backdoors.","status":"published","published":"2025-10-18T06:30:25Z","modified":"2025-10-18T06:30:31Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:04:01.823376Z"}],"nvd":[{"id":"CVE-2017-20207","description":"The Flickr Gallery plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 1.5.2 via deserialization of untrusted input from the `pager ` parameter. This allows unauthenticated attackers to inject a PHP Object. Attackers were actively exploiting this vulnerability with the WP_Theme() class to create backdoors.","status":"published","published":"2025-10-18T04:15:58.753Z","modified":"2026-06-17T01:15:24.69Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:04:21.76411Z"}]}}