HIGH

CVE-2026-97339

Q: What is CVE-2026-97339?

The Complianz GDPR/CCPA Cookie Consent Banner plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content via yotu-wp Cookie-Blocker Filter in all versions up to, and including, 7.5.5 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. The exploit bypasses WordPress's wp_kses comment sanitization because the payload uses only allow-listed tags and hides executable tokens inside quoted attribute values as plain text; the XSS is only realized when Complianz's own output-buffer filter performs str_replace() rewrites that break out of the attribute context, and requires the comment to be approved before it executes for visitors.

Q: Is CVE-2026-97339 actively exploited?

Active exploitation of CVE-2026-97339 has not been confirmed. Its EPSS score was 0.3% on 2026-10-16, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2026-97339?

CVE-2026-97339 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

Complianz GDPR/CCPA Cookie Consent Banner <= 7.5.5 - Unauthenticated Stored Cross-Site Scripting via Comment Content via yotu-wp Cookie-Blocker Filter

CVSS v3

7.2

HIGH

EPSS Score

0.3 %

exploit probability, as of 2026-10-16

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-97339 yet.

Full record on NVD

Description

The Complianz GDPR/CCPA Cookie Consent Banner plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content via yotu-wp Cookie-Blocker Filter in all versions up to, and including, 7.5.5 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. The exploit bypasses WordPress's wp_kses comment sanitization because the payload uses only allow-listed tags and hides executable tokens inside quoted attribute values as plain text; the XSS is only realized when Complianz's own output-buffer filter performs str_replace() rewrites that break out of the attribute context, and requires the comment to be approved before it executes for visitors.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Published: 2026-10-16
Last Modified: 2026-10-16

Frequently asked questions

What is CVE-2026-97339?

Is CVE-2026-97339 actively exploited?

Active exploitation of CVE-2026-97339 has not been confirmed. Its EPSS score was 0.3% on 2026-10-16, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-97339?

CVE-2026-97339 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

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