Real Cookie Banner: GDPR & ePrivacy Cookie Consent <= 5.3.5 - Unauthenticated Stored Cross-Site Scripting via Comment
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The Real Cookie Banner: GDPR & ePrivacy Cookie Consent plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment in all versions up to, and including, 5.3.5 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. Malicious script payloads placed in the title attribute of an anchor tag survive WordPress's comment kses filter at save time, as the payload is only promoted to executable HTML attributes when the plugin's page-wide regex strips the closing quote delimiter at render time; exploitability is therefore subject to the standard comment moderation workflow before the comment is publicly displayed.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-03 Threatist record created from CVE-2026-92977
- 2026-10-03 Alias added: GHSA-x9w3-97r6-g49g
- 2026-10-03 CISA SSVC decision points changed
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/32fbba37-208c-4e94-8d07-f3fd14ee2ee1?source=cve
- https://plugins.trac.wordpress.org/browser/real-cookie-banner/tags/5.3.0/vendor/devowl-wp/fast-html-tag/src/FastHtmlTag.php#L166
- https://plugins.trac.wordpress.org/browser/real-cookie-banner/tags/5.3.0/inc/view/Blocker.php#L213
- https://plugins.trac.wordpress.org/browser/real-cookie-banner/tags/5.3.0/inc/view/Blocker.php#L233
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3710645%40real-cookie-banner&new=3710645%40real-cookie-banner
More devowl vulnerabilities
- TI-2023-00270 Real Media Library < 4.18.29 - Author+ Stored XSS CVSS 3.1MEDIUM 5.4
- TI-2022-04120 Real Cookie Banner < 3.4.10 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
- TI-2025-01275 Real Cookie Banner < 5.1.6 - Admin+ Stored XSS CVSS 3.1MEDIUM 4.8
- TI-2025-11130 Server-side request forgery in devowl Real Cookie Banner: GDPR & ePrivacy Cookie Consent CVSS 3.1MEDIUM 6.8
- TI-2024-02163 Real Media Library <= 4.22.11 - Authenticated (Author+) Stored Cross-Site Scripting CVSS 3.1MEDIUM 6.4
- TI-2024-01887 Improper input validation in devowl Real Media Library: Media Library Folder & File… CVSS 3.1MEDIUM 6.4
Sources
- CVE-2026-92977 · CVE Program
- CVE-2026-92977 · NVD
- FIRST EPSS
- GHSA-x9w3-97r6-g49g · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences