EUVD-2026-81315
GHSA-w3hh-7qrr-242f
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Unauthenticated remote trigger with no UI (AV:N/AC:L/PR:N/UI:N); direct primitive is a low-impact option overwrite (I:L), with no attacker-facing read (C:N) or availability effect.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
2DescriptionCVE.org
The All-in-One WP Migration and Backup plugin for WordPress is vulnerable to Insufficient Credential Protection in versions up to, and including, 7.110. This is due to the Ai1wm_Main_Controller::init() method - registered on the admin_init hook, which fires unauthenticated on admin-ajax.php and admin-post.php requests - reading $_SERVER['PHP_AUTH_USER'] and $_SERVER['PHP_AUTH_PW'] from any incoming request and writing them to the ai1wm_auth_header option via update_option() as a reversible base64-encoded string, with no capability check, nonce verification, is_user_logged_in() check, or confirmation that Basic authentication actually succeeded. This makes it possible for unauthenticated attackers to capture into the database, in reversible base64 form, any WordPress Application Password or HTTP Basic credential presented to /wp-admin/ by a legitimate integration, or to overwrite the stored credential with an attacker-chosen value by sending an anonymous request carrying a crafted Authorization: Basic header. This is particularly impactful in environments using WordPress Application Passwords for REST API or third-party integrations, as those credentials are transmitted as HTTP Basic auth to /wp-admin/ and will be silently harvested via this unauthenticated write path.
AnalysisAI
Unauthenticated attackers can write to the WordPress database option ai1wm_auth_header in All-in-One WP Migration and Backup versions up to 7.110 by sending a crafted Authorization: Basic header to admin-ajax.php or admin-post.php, because the plugin's Ai1wm_Main_Controller::init() method on the admin_init hook reads PHP_AUTH_USER and PHP_AUTH_PW without authentication or nonce checks and stores them as reversible base64. This integrity-only issue (CVSS 5.3) allows overwriting the stored credential with attacker-chosen values, and in environments using WordPress Application Passwords, legitimate credentials sent to /wp-admin/ are silently captured into the database, though extracting them requires separate read access. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions to reach the write path - remote unauthenticated exploitation against default configurations of All-in-One WP Migration and Backup ≤7.110, since Ai1wm_Main_Controller::init() is registered on admin_init which executes for anonymous requests to /wp-admin/admin-ajax.php and /wp-admin/admin-post.php. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N, 5.3 Medium) accurately captures the DIRECTLY reachable capability: an unauthenticated network attacker can trigger the vulnerable write path with no user interaction and low complexity, but the vendor scored only I:L because the attacker's guaranteed primitive is overwriting the stored ai1wm_auth_header option rather than reading arbitrary secrets. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the upstream fix from the Trac changeset (revision 3696427) or update to a patched version once released by the vendor; at the time of analysis, a released patched version has not been independently confirmed. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-522 – Insufficiently Protected Credentials
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External POC / Exploit Code
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