CVE-2026-57751: Unauthenticated CSRF in Heateor Social Login ≤1.1.39

Technical summary

CVE-2026-57751 is an unauthenticated Cross-Site Request Forgery (CWE-352) affecting Heateor Social Login through version 1.1.39. The vulnerability stems from insufficient CSRF token validation or missing token implementation in critical endpoints. An attacker can craft a malicious webpage, email, or advertisement containing a forged request that, when visited by a logged-in user, will execute state-changing operations (such as account modifications, permission grants, or data alterations) without explicit user consent. The attack vector is network-based with low attack complexity, requiring only user interaction (clicking a link or visiting a page), and carries a CVSS 3.1 score of 8.1 (HIGH). No authentication is required on the attacker's side, significantly lowering the barrier to exploitation.

Business impact

A successful CSRF attack can result in unauthorized changes to user accounts, escalation of privileges, or exposure of sensitive user data. For organizations integrating Heateor Social Login for authentication or identity management, compromised user accounts could lead to lateral movement, data exfiltration, or privilege escalation within downstream applications. Social login implementations are often trusted entry points; their compromise undermines user trust and regulatory compliance (particularly GDPR, CCPA, and similar standards requiring reasonable data protection). The reputational and operational impact may exceed the technical severity.

Affected systems

Any deployment of Heateor Social Login version 1.1.39 or earlier is vulnerable. This includes WordPress installations, custom web applications, and third-party services using this library for social authentication. Organizations should inventory all instances of Heateor Social Login and confirm their version number. Users who have updated to versions after 1.1.39 are not affected, pending confirmation from the vendor that a fix has been released.

Exploitability

The vulnerability is moderately easy to exploit. An attacker does not need credentials or special technical knowledge—only the ability to host a malicious webpage or inject a crafted link into user communications. The attack requires user interaction (a click or page visit), but the low complexity of the CSRF vector means a basic payload can trigger the exploit. The lack of CVSS-documented recent weaponization or KEV listing suggests active widespread exploitation has not been formally tracked, but the attack surface is broad and the bar to execution is low.

Remediation

Organizations should immediately update Heateor Social Login to the latest available version released after 1.1.39. Verify the patch with the plugin vendor's official advisory. If an immediate patch is unavailable, implement mitigating controls: enforce Content Security Policy (CSP) headers to restrict frame embedding, apply SameSite cookie attributes (Strict or Lax), and enforce re-authentication for sensitive operations. Additionally, educate users to avoid clicking links from untrusted sources and monitor account activity for unauthorized changes.

Patch guidance

Apply the latest version of Heateor Social Login released after version 1.1.39. Consult the official Heateor or plugin distributor's release notes to confirm the patch version explicitly addresses CVE-2026-57751. Test the update in a staging environment before production deployment to ensure compatibility with dependent plugins, themes, and custom integrations. Monitor plugin logs and user authentication patterns post-patch for anomalies. If the vendor has not released a patch, contact their support channel directly and document the timeline; consider disabling the plugin until a fix is available.

Detection guidance

Monitor web application logs for suspicious cross-origin requests to authentication endpoints, user account modification pages, or permission-grant endpoints. Look for POST or state-changing requests lacking proper referrer headers or originating from external domains. Enable browser console logging and review for CORS/CSRF policy violations. Implement IDS/IPS rules to detect forged social login requests. Track user account changes for anomalies (unexpected permission grants, email/password modifications, linked accounts). Web Application Firewalls (WAF) should be configured to validate CSRF tokens on all state-changing requests and reject requests from unexpected referrers.

Why prioritize this

This vulnerability scores HIGH (8.1 CVSS) and warrants immediate attention because it combines high confidentiality and integrity impact with no authentication requirement and low attack complexity. Social login is a widely-used attack surface; compromise can cascade to downstream applications. While not yet in the KEV catalog, the ease of exploitation and broad exposure suggest rapid remediation is essential. Organizations should treat this as critical if Heateor Social Login is internet-facing or handles sensitive user data.

Risk score, explained

The CVSS 3.1 score of 8.1 reflects: (1) Network-based attack vector requiring only internet access, (2) Low attack complexity requiring no special tooling, (3) No attacker authentication required, (4) User interaction necessary (moderate friction), (5) High impact to confidentiality and integrity of user accounts and linked data, (6) No availability impact. The absence of an availability component prevents a perfect 9.0 score, but the authentication and integrity compromise makes this a serious threat to identity and access management posture.

Frequently asked questions