EUVD-2026-51686
GHSA-vvqx-954c-23g6
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Stored XSS requires victim page visit (UI:R, not UI:N); scope changes to victim browser (S:C); contributor authentication required (PR:L); no availability impact.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Lifecycle Timeline
2DescriptionCVE.org
The SureForms - Contact Form, Payment Form & Other Custom Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'headingWrapper' parameter in all versions up to, and including, 2.8.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
AnalysisAI
Stored Cross-Site Scripting in the SureForms WordPress plugin (all versions through 2.8.1) allows authenticated contributors to inject persistent JavaScript payloads via the unsanitized 'headingWrapper' parameter in the Advanced Heading Gutenberg block. Any user who subsequently visits a page containing the injected block triggers script execution in their browser, creating a realistic path to admin session hijacking when site administrators review contributor-submitted content. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated WordPress user account with contributor-level access or higher (confirmed by CVSS PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS score of 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N) reflects medium severity, but the UI:N rating warrants scrutiny - stored XSS requires a victim to actively visit the injected page, which aligns with UI:R under standard CVSS 3.1 conventions; this would lower the effective score to approximately 5.4. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker registers or compromises a contributor-level WordPress account, then creates or edits a post containing a SureForms Advanced Heading block and sets the 'headingWrapper' parameter to a JavaScript payload designed to exfiltrate the visitor's session cookie to an attacker-controlled endpoint. When a WordPress administrator subsequently visits the page to review or approve the content, the script executes silently in their browser, transmitting the admin session token and allowing the attacker to take full control of the WordPress site. … |
| Remediation | Vendor-released patch: 2.8.2. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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