EUVD-2026-92082
GHSA-fqfj-m5mc-j28g
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Storing block content realistically needs at least contributor-level access (PR:L) and an admin/visitor must view it (UI:R); stored XSS crosses into the victim's browser (S:C) with low C/I and no availability impact.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
2DescriptionCVE.org
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Liquid Web / StellarWP Gutenberg Blocks by Kadence Blocks kadence-blocks allows Stored XSS.This issue affects Gutenberg Blocks by Kadence Blocks: from n/a through 3.7.11.1.
Articles & Coverage 1
AnalysisAI
Stored cross-site scripting in the Kadence Blocks WordPress plugin (Gutenberg Blocks by Kadence Blocks, versions from n/a through 3.7.11.1) allows a low-privileged content author to persist malicious script inside a Kadence/Gutenberg block, which then executes in the browser of any user who views the affected page or post - including an administrator. Patchstack rates it CVSS 7.1 with vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L; the independent assessment refines this to AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N, because reaching the vulnerable editing surface realistically requires an account with post/page authoring capability, and no public exploit code has been identified at time of analysis. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the ability to create or edit content using Kadence Blocks (Gutenberg block editor), so an account with post/page authoring capability is the realistic prerequisite despite the vector's PR:N claim; the payload must be stored in a Kadence block and then rendered. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a stored (persistent) cross-site scripting flaw (CWE-79) in the Kadence Blocks WordPress plugin through 3.7.11.1, reported by Patchstack and assigned CVSS 7.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch version is specified in the available data; the only fix guidance currently traceable is the vendor/Patchstack advisory at https://patchstack.com/database/wordpress/plugin/kadence-blocks/vulnerability/wordpress-gutenberg-blocks-by-kadence-blocks-plugin-3-7-11-1-cross-site-scripting-xss-vulnerability?_s_id=cve, so operators should treat 3.7.11.1 as the last known affected release and update the Kadence Blocks plugin to the newest version available in the WordPress.org repository (or via the vendor if licensed), verifying the installed version afterwards rather than assuming any post-3.7.11.1 build is the security fix. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all WordPress installations running Kadence Blocks versions 3.7.11.1 or earlier and assess whether the plugin is essential; if not required, disable and remove it immediately. …
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External POC / Exploit Code
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