CVE-2026-2951 — Cross-Site Scripting (XSS)

CVE-2026-2951 — Cross-Site Scripting (XSS)

CVE-2026-2951 — The Gutentor – Gutenberg Blocks – Page Builder for Gutenberg Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 3.5.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers

What This Means For You

  • If your environment is affected by CWE-79, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-2951 updates and patches.

Related ATT&CK Techniques

🛡️ Detection Rules

3 rules · 6 SIEM formats

3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.

high T1190 Initial Access

WordPress Gutentor Stored XSS Attempt via Script Injection — CVE-2026-2951

Sigma YAML — free preview
✓ Sigma · Splunk SPL Sentinel KQL Elastic QRadar AQL Wazuh Export via Bot →

Indicators of Compromise

IDTypeIndicator
CVE-2026-2951 vulnerability CVE-2026-2951
CWE-79 weakness CWE-79
Source & Attribution
Source PlatformNVD
ChannelNational Vulnerability Database
PublishedApril 23, 2026 at 06:16 UTC

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