EUVD-2026-71842
GHSA-63mm-gwfc-cmcq
Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
AC:H because non-default Secondary parser engine must be configured; UI:R because victim must visit the injected page for XSS to execute.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
2DescriptionCVE.org
The iubenda | All-in-one Compliance for GDPR / CCPA Cookie Consent + more plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content via AdSense Regex Rewrite in all versions up to, and including, 3.13.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This vulnerability only manifests when the 'Secondary' parser engine is active (parser_engine=default); it does not exist under the default 'new' DOM-based parser engine.
AnalysisAI
Stored Cross-Site Scripting in the iubenda All-in-one Compliance for GDPR/CCPA WordPress plugin (versions ≤3.13.4) allows unauthenticated attackers to inject persistent malicious scripts into pages via comment content processed through the AdSense regex rewrite path. The injected payload executes in any visiting user's browser, enabling session hijacking, credential theft, or malicious redirects. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires two concrete conditions: (1) the iubenda plugin must be configured with parser_engine=default, which activates the legacy 'Secondary' parser engine rather than the newer DOM-based engine; new plugin installations using the DOM-based parser are explicitly immune. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS vector (AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L) overstates two metrics. … 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 | Vendor-released patch: version 3.13.5. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all WordPress instances running iubenda versions ≤3.13.4 and determine whether legacy parser configuration is enabled. …
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External POC / Exploit Code
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