CVE-2026-97344 in Wp Social Login and Register Social Counter Plugin
Summary
by MITRE • 10/03/2026
The Wp Social Login and Register Social Counter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Avatar Alt Attribute via Arbitrary User Meta Write in all versions up to, and including, 3.2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires the attacker to chain two steps: invoking the nonce-only dismiss_ajax_call endpoint (nonce accessible to Subscribers via any wp-admin page) to set the xs_social_profile_image meta flag on their own account, which activates the unescaped img output branch in xs_social_get_avatar, and then setting their display name to a script payload that core's ENT_NOQUOTES handling preserves unescaped.
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Analysis
by VulDB Data Team • 10/03/2026
The vulnerability identified within the Wp Social Login and Register Social Counter plugin for WordPress represents a significant security risk due to its potential for Stored Cross-Site Scripting attacks. This flaw exists in all versions up through 3.2.1 and stems from insufficient input sanitization and output escaping mechanisms inherent in the plugin's architecture. The core issue lies in how user metadata, specifically avatar attributes, are handled during rendering processes within the WordPress environment. Because the application fails to properly validate or escape data before it is displayed on web pages, malicious actors can exploit this gap to inject executable JavaScript code that persists across sessions and affects multiple users who view the compromised content.
The operational mechanism of this vulnerability requires an attacker with authenticated access at the subscriber level or higher to execute a specific sequence of actions. First, the attacker must invoke the dismiss_ajax_call endpoint using a nonce value that is accessible to subscribers through any standard wp-admin page interaction. This action sets the xs_social_profile_image meta flag on the attacker's own account profile. Once this flag is activated, it triggers an unescaped image output branch within the function responsible for retrieving social avatars, known as xs_social_get_avatar. Subsequently, by setting their display name to a crafted script payload, the attacker leverages WordPress core's ENT_NOQUOTES handling which preserves certain characters without escaping them fully. This combination allows arbitrary web scripts to be embedded directly into the page structure associated with the user profile.
The impact of this vulnerability is severe because it enables persistent malicious code execution whenever any other user accesses a page containing the injected content. Unlike reflected XSS attacks that require immediate interaction, stored vulnerabilities remain active until removed from the database or server side. This persistence increases the likelihood of successful exploitation as victims may unknowingly trigger the script through routine browsing activities such as viewing profiles or comments where avatar images are displayed. The ability to execute arbitrary scripts can lead to session hijacking, credential theft, defacement of websites, and further propagation of malware if combined with other attack vectors targeting connected systems or user data stores.
From a classification perspective, this vulnerability aligns closely with CWE-79 Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. Specifically it falls under the stored variant where malicious scripts are permanently stored within target servers such as databases message boards or comment fields. In terms of adversarial tactics according to MITRE ATT&CK framework this behavior corresponds to techniques involving client-side code injection which allows attackers to manipulate browser-based interactions and potentially escalate privileges by stealing sensitive information like authentication tokens or personal identifiable data exposed through the compromised interface elements.
Mitigation strategies should focus primarily on immediate patching to version 3.2.2 or later where these flaws have been addressed by developers implementing stricter input validation routines alongside comprehensive output encoding practices. Administrators unable to upgrade immediately must restrict user registration capabilities until patches are applied since lower-level accounts possess the necessary permissions required for exploitation via nonce access patterns found in standard administrative interfaces. Additionally enforcing role-based access controls more rigorously and auditing existing installations for signs of compromise such as unexpected script tags within profile fields can help detect ongoing attacks while remediation efforts proceed. Regular security audits focusing on how user-generated content is processed before rendering will also reduce exposure to similar vulnerabilities across the broader WordPress ecosystem plugins relying heavily on dynamic metadata display features particularly those involving avatar systems or social integration components should prioritize these defensive measures proactively rather than reactively after incidents occur