CVE-2026-56290 (GCVE-0-2026-56290)
Vulnerability from cvelistv5 – Published: 2026-06-29 14:31 – Updated: 2026-08-12 13:53- CWE-434 - Unrestricted Upload of File with Dangerous Type
| URL | Tags |
|---|---|
| https://www.joomlack.fr/ | product |
| https://mysites.guru/blog/pagebuilderck-unauthent… | third-party-advisory |
| https://forum.joomlack.fr/index.php/page-builder-… | patch |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| joomlack.fr | JoomlaCK.fr Page Builder CK extension for Joomla |
Affected:
1.0-3.6.0
|
guessed |
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
Exploited: Yes
Timestamps
Scope
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-284 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Page Builder |
| Due Date | 2026-07-10 |
| Date Added | 2026-07-07 |
| Vendorproject | Joomlack |
| Vulnerabilityname | Joomlack Page Builder Improper Access Control Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
Exploited: Yes
Timestamps
Scope
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | Joomla Extension - joomlack.fr - Unauthenticated file upload in Page Builder CK extension < 3.6.0 |
| Vendor | joomlack.fr |
| Product | JoomlaCK.fr Page Builder CK extension for Joomla |
| Added Date | 2026-07-07T17:00:54.263Z |
| Cvss Score | 10.0 |
| Epss Score | 0.00356 |
| Cvss Severity | CRITICAL |
| Epss Percentile | 0.27626 |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.