CVE-2026-2951: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in gutentor Gutentor – Gutenberg Blocks – Page Builder for Gutenberg Editor
CVE-2026-2951 is a stored cross-site scripting (XSS) vulnerability in the Gutentor – Gutenberg Blocks – Page Builder for Gutenberg Editor WordPress plugin. Versions up to and including 3. 5. 5 are affected due to insufficient input sanitization and output escaping. Authenticated users with contributor-level access or higher can inject malicious scripts into pages, which execute when other users view those pages. The vulnerability has a CVSS 3. 1 base score of 5. 4, indicating medium severity. No official patch or remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
The Gutentor WordPress plugin suffers from a stored cross-site scripting vulnerability (CWE-79) caused by improper neutralization of input during web page generation. This allows authenticated contributors or higher to inject arbitrary scripts into pages. These scripts execute in the context of users who view the infected pages, potentially leading to information disclosure or session hijacking. The vulnerability affects all versions up to 3.5.5. No vendor advisory or patch information is currently provided, and no known active exploitation has been reported.
Potential Impact
Successful exploitation allows an authenticated user with contributor-level or higher privileges to inject malicious scripts that execute in the browsers of users viewing the affected pages. This can lead to limited confidentiality and integrity impacts such as theft of user session tokens or manipulation of page content. Availability is not impacted. The medium CVSS score reflects the requirement for authenticated access and limited impact scope.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict contributor-level access to trusted users only and consider monitoring for suspicious page content. Avoid granting contributor or higher privileges to untrusted users. No official patch or temporary fix has been published at this time.
CVE-2026-2951: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in gutentor Gutentor – Gutenberg Blocks – Page Builder for Gutenberg Editor
Description
CVE-2026-2951 is a stored cross-site scripting (XSS) vulnerability in the Gutentor – Gutenberg Blocks – Page Builder for Gutenberg Editor WordPress plugin. Versions up to and including 3. 5. 5 are affected due to insufficient input sanitization and output escaping. Authenticated users with contributor-level access or higher can inject malicious scripts into pages, which execute when other users view those pages. The vulnerability has a CVSS 3. 1 base score of 5. 4, indicating medium severity. No official patch or remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Gutentor WordPress plugin suffers from a stored cross-site scripting vulnerability (CWE-79) caused by improper neutralization of input during web page generation. This allows authenticated contributors or higher to inject arbitrary scripts into pages. These scripts execute in the context of users who view the infected pages, potentially leading to information disclosure or session hijacking. The vulnerability affects all versions up to 3.5.5. No vendor advisory or patch information is currently provided, and no known active exploitation has been reported.
Potential Impact
Successful exploitation allows an authenticated user with contributor-level or higher privileges to inject malicious scripts that execute in the browsers of users viewing the affected pages. This can lead to limited confidentiality and integrity impacts such as theft of user session tokens or manipulation of page content. Availability is not impacted. The medium CVSS score reflects the requirement for authenticated access and limited impact scope.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict contributor-level access to trusted users only and consider monitoring for suspicious page content. Avoid granting contributor or higher privileges to untrusted users. No official patch or temporary fix has been published at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-02-21T20:23:25.224Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e9891887115cfb6867f65f
Added to database: 4/23/2026, 2:51:04 AM
Last enriched: 4/23/2026, 3:06:11 AM
Last updated: 4/23/2026, 4:09:53 AM
Views: 5
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