CryptX <= 4.0.5 - Authenticated (Contributor+) Stored Cross-Site Scripting
Key facts
- Attack vector
- Network
- Privileges required
- Low
- 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 CryptX plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's `cryptx` shortcode in all versions up to, and including, 4.0.5 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
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
- 2026-10-02 Threatist record created from CVE-2025-13739
- 2026-10-03 Alias added: GHSA-vcq4-6967-rq8f
References
Other 6
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2f8cb7d7-eb40-403e-85de-c16200ee424d?source=cve
- https://plugins.trac.wordpress.org/browser/cryptx/tags/4.0.4/classes/CryptX.php#L149
- https://plugins.trac.wordpress.org/browser/cryptx/tags/4.0.4/classes/CryptX.php#L237
- https://plugins.trac.wordpress.org/browser/cryptx/tags/4.0.4/classes/CryptX.php#L604
- https://plugins.trac.wordpress.org/browser/cryptx/tags/4.0.4/classes/CryptX.php#L1295
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3416363%40cryptx&new=3416363%40cryptx&sfp_email=&sfph_mail=
Sources
- CVE-2025-13739 · CVE Program
- CVE-2025-13739 · NVD
- FIRST EPSS
- GHSA-vcq4-6967-rq8f · 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