Cross-site scripting in joomlack.fr Page Builder CK extension for Joomla
Priority LOW 30CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
Joomla Extension - joomlack.fr - Reflected XSS in Page Builder CK < 3.6.5 - The Joomla extension Page Builder CK is vulnerable to a reflected XSS via the iscontenttype parameter.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00436 38th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| joomlack.fr | Page Builder CK extension for Joomla | 1.0.0-3.6.4 | — | No fix listed | CNA |
- Page Builder CK extension for Joomla Vendorjoomlack.fr Affected 1.0.0-3.6.4 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-77993
- 2026-10-03 Alias added: GHSA-vrrp-8526-8v58
References
Other 1
More joomlack.fr vulnerabilities
- TI-2026-54269 SQL injection in joomlack.fr Page Builder CK extension for Joomla CVSS 4.0CRITICAL 9.3
- TI-2026-52039 SQL injection in joomlack.fr Page Builder CK extension for Joomla CVSS 4.0CRITICAL 9.3
- TI-2026-44533 Improper access control in joomlack.fr Page Builder CK extension for Joomla CVSS 3.1CRITICAL 9.1
- TI-2026-45024 Unrestricted file upload in joomlack.fr Page Builder CK extension for Joomla CVSS 4.0CRITICAL 9.4
Sources
- CVE-2026-77993 · CVE Program
- CVE-2026-77993 · NVD
- FIRST EPSS
- GHSA-vrrp-8526-8v58 · 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