{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-10795: UpdraftPlus: WP Backup & Migration Plugin <= 1.26.4 - Unauthenticated Authentication Bypass via UpdraftCentral udrpc","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-10795","status":"final","version":"1","initial_release_date":"2026-06-11T05:34:20.360Z","current_release_date":"2026-06-11T14:37:38.538Z","revision_history":[{"date":"2026-06-11T05:34:20.360Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"The UpdraftPlus: WP Backup & Migration Plugin plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 1.26.4 via the UpdraftPlus_Remote_Communications_V2::wp_loaded function. This is due to insufficient validation of the remote communications message format, where signature verification can be bypassed and unchecked decryption return values collapse to a predictable all-zero encryption key. This makes it possible for unauthenticated attackers to forge arbitrary RPC commands and run them as the connected administrator, such as uploading and activating a malicious plugin, which ultimately leads to remote code execution.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-10795 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-10795"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-10795"},{"category":"external","summary":"wordfence.com","url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/e901c2a0-2477-4b9a-8483-6002419e0a2f?source=cve"},{"category":"external","summary":"plugins.svn.wordpress.org","url":"https://plugins.svn.wordpress.org/updraftplus/tags/1.26.4/vendor/team-updraft/common-libs/src/updraft-rpc/class-udrpc2.php"},{"category":"external","summary":"plugins.svn.wordpress.org","url":"https://plugins.svn.wordpress.org/updraftplus/tags/1.26.4/vendor/team-updraft/common-libs/src/updraft-rpc/class-udrpc.php"},{"category":"external","summary":"plugins.trac.wordpress.org","url":"https://plugins.trac.wordpress.org/changeset/3561938/updraftplus/trunk/vendor/team-updraft/common-libs/src/updraft-rpc/class-udrpc2.php"}]},"product_tree":{"branches":[{"category":"vendor","name":"davidanderson","branches":[{"category":"product_name","name":"UpdraftPlus: WP Backup & Migration Plugin","branches":[{"category":"product_version_range","name":"<=1.26.4","product":{"name":"davidanderson UpdraftPlus: WP Backup & Migration Plugin <=1.26.4","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:davidanderson:updraftplus\\:_wp_backup_\\&_migration_plugin:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-10795","title":"UpdraftPlus: WP Backup & Migration Plugin <= 1.26.4 - Unauthenticated Authentication Bypass via UpdraftCentral udrpc","notes":[{"category":"description","text":"The UpdraftPlus: WP Backup & Migration Plugin plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 1.26.4 via the UpdraftPlus_Remote_Communications_V2::wp_loaded function. This is due to insufficient validation of the remote communications message format, where signature verification can be bypassed and unchecked decryption return values collapse to a predictable all-zero encryption key. This makes it possible for unauthenticated attackers to forge arbitrary RPC commands and run them as the connected administrator, such as uploading and activating a malicious plugin, which ultimately leads to remote code execution.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1"]}]}]}