{"id":"CVE-2026-3454","aliases":["EUVD-2026-27225","GHSA-6288-wf2g-3fwm"],"status":"published","title":"GenerateBlocks \u003c= 2.2.0 - Insecure Direct Object Reference to Authenticated (Contributor+) Sensitive Information Exposure via Dynamic Tag Replacements","description":"The GenerateBlocks plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.2.0. This is due to missing object-level authorization checks in the /wp-json/generateblocks/v1/dynamic-tag-replacements REST endpoint. The endpoint only verifies that the user has the edit_posts capability but does not verify the user has permission to access the specific post or its associated data referenced by attacker-controlled id parameters in dynamic tag content. This makes it possible for authenticated attackers, with Contributor-level access and above, to extract sensitive information from arbitrary posts including author email addresses and non-protected post meta values by crafting dynamic tag payloads such as {{post_meta id:\u003ctarget\u003e|key:\u003cmeta_key\u003e}} and {{post_title id:\u003ctarget\u003e|link:author_email}}.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00539,"percentile":0.457,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-639"],"published":"2026-05-05T06:43:24Z","modified":"2026-06-17T10:43:36Z","products":[{"vendor":"edge22","product":"generateblocks"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/0297d524-e016-4f8d-920c-d58c62edb2a0?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.0/includes/dynamic-tags/class-dynamic-tags.php#L424"},{"url":"https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.0/includes/dynamic-tags/class-dynamic-tags.php#L501"},{"url":"https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.0/includes/dynamic-tags/class-dynamic-tag-callbacks.php#L64"},{"url":"https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.0/includes/dynamic-tags/class-dynamic-tag-callbacks.php#L364"},{"url":"https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.0/includes/class-meta-handler.php#L335"},{"url":"https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.0/includes/dynamic-tags/class-dynamic-tags.php#L392"},{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026new=3495827%40generateblocks%2Ftrunk\u0026old=3415721%40generateblocks%2Ftrunk\u0026sfp_email=\u0026sfph_mail="},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3454"},{"url":"https://github.com/advisories/GHSA-6288-wf2g-3fwm"}],"sources":{"cve":[{"id":"CVE-2026-3454","title":"GenerateBlocks \u003c= 2.2.0 - Insecure Direct Object Reference to Authenticated (Contributor+) Sensitive Information Exposure via Dynamic Tag Replacements","description":"The GenerateBlocks plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.2.0. This is due to missing object-level authorization checks in the /wp-json/generateblocks/v1/dynamic-tag-replacements REST endpoint. The endpoint only verifies that the user has the edit_posts capability but does not verify the user has permission to access the specific post or its associated data referenced by attacker-controlled id parameters in dynamic tag content. This makes it possible for authenticated attackers, with Contributor-level access and above, to extract sensitive information from arbitrary posts including author email addresses and non-protected post meta values by crafting dynamic tag payloads such as {{post_meta id:\u003ctarget\u003e|key:\u003cmeta_key\u003e}} and {{post_title id:\u003ctarget\u003e|link:author_email}}.","status":"published","published":"2026-05-05T06:43:24.912Z","modified":"2026-05-05T12:59:24.734Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T13:49:09.229322Z"}],"euvd":[{"id":"EUVD-2026-27225","description":"The GenerateBlocks plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.2.0. This is due to missing object-level authorization checks in the /wp-json/generateblocks/v1/dynamic-tag-replacements REST endpoint. The endpoint only verifies that the user has the edit_posts capability but does not verify the user has permission to access the specific post or its associated data referenced by attacker-controlled id parameters in dynamic tag content. This makes it possible for authenticated attackers, with Contributor-level access and above, to extract sensitive information from arbitrary posts including author email addresses and non-protected post meta values by crafting dynamic tag payloads such as {{post_meta id:\u003ctarget\u003e|key:\u003cmeta_key\u003e}} and {{post_title id:\u003ctarget\u003e|link:author_email}}.","status":"published","published":"2026-05-05T06:43:24Z","modified":"2026-05-05T12:59:24Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T19:05:17.068199Z"}],"ghsa":[{"id":"GHSA-6288-wf2g-3fwm","title":"The GenerateBlocks plugin for WordPress is vulnerable to Insecure Direct Object Reference in all...","description":"The GenerateBlocks plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.2.0. This is due to missing object-level authorization checks in the /wp-json/generateblocks/v1/dynamic-tag-replacements REST endpoint. The endpoint only verifies that the user has the edit_posts capability but does not verify the user has permission to access the specific post or its associated data referenced by attacker-controlled id parameters in dynamic tag content. This makes it possible for authenticated attackers, with Contributor-level access and above, to extract sensitive information from arbitrary posts including author email addresses and non-protected post meta values by crafting dynamic tag payloads such as {{post_meta id:\u003ctarget\u003e|key:\u003cmeta_key\u003e}} and {{post_title id:\u003ctarget\u003e|link:author_email}}.","status":"published","published":"2026-05-05T09:31:55Z","modified":"2026-05-05T09:32:01Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T15:07:54.707151Z"}],"nvd":[{"id":"CVE-2026-3454","description":"The GenerateBlocks plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.2.0. This is due to missing object-level authorization checks in the /wp-json/generateblocks/v1/dynamic-tag-replacements REST endpoint. The endpoint only verifies that the user has the edit_posts capability but does not verify the user has permission to access the specific post or its associated data referenced by attacker-controlled id parameters in dynamic tag content. This makes it possible for authenticated attackers, with Contributor-level access and above, to extract sensitive information from arbitrary posts including author email addresses and non-protected post meta values by crafting dynamic tag payloads such as {{post_meta id:\u003ctarget\u003e|key:\u003cmeta_key\u003e}} and {{post_title id:\u003ctarget\u003e|link:author_email}}.","status":"published","published":"2026-05-05T07:16:00.277Z","modified":"2026-06-17T10:43:36.68Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:12:17.022502Z"}]}}