# CVE-2026-103900: WPJAM Basic <= 7.1 - Unauthenticated Privilege Escalation to 'data[args][role]' Parameter

Status: published. Published: 2026-11-07. Updated: 2026-11-07.

The WPJAM Basic plugin for WordPress is vulnerable to Privilege Escalation in versions up to, and including, 7.1 This is due to the WPJAM_User_Signup::signup() function unpacking attacker-supplied `data[args]` from the AJAX POST body and merging it via PHP array union into the payload passed to WPJAM_User::create(), whose internal whitelist (wpjam_pick) explicitly preserves the `role` key before it is handed to wp_insert_user(). The endpoint is registered as wp_ajax_nopriv_{provider}-signup with a nonce that is emitted on the public login page. This makes it possible for unauthenticated attackers to elevate their privileges to Administrator by creating a new user with an attacker-chosen role, provided a social-login provider is registered and open registration is enabled.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- denishua / WPJAM Basic: ≥ 0; ≤ 7.1 (affected, semver). Source: CNA: Wordfence

## Severity and prioritization

- CVSS 3.1: 8.1 (high); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H; source: CNA: Wordfence

- CVSS 3.1: 8.1 (high); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H; source: NVD: security@wordfence.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-269

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/77464287-bbaa-428e-9292-c97c10733adf?source=cve (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1313 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1302 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1155 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1396 (CNA: Wordfence)

- https://wordpress.org/plugins/wpjam-basic/ (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1155 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1302 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1313 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1396 (security@wordfence.com)

- https://wordpress.org/plugins/wpjam-basic/ (security@wordfence.com)

- https://www.wordfence.com/threat-intel/vulnerabilities/id/77464287-bbaa-428e-9292-c97c10733adf?source=cve (security@wordfence.com)

## Provenance

- CNA: Wordfence: https://www.cve.org/CVERecord?id=CVE-2026-103900; retrieved 2026-11-07; source updated 2026-11-07

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-103900; retrieved 2026-11-07; source updated 2026-11-07

Revision: 1f0373b26bfe97cc39cb28256000c58852f8b1bb697767fc203191433aa565bf

Canonical: https://y2.dev/cve/CVE-2026-103900

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