CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Called exploited 20 days after disclosure.
Measured from the CVE publication date to the earliest of 3 KEV catalogues that list it.
The life of this vulnerability
- CVE published
- First KEV listing20d
- Last sighting56d
Gaps are compressed to equal steps. The elapsed time is printed under each.
Which catalogues call it exploited
- CISA KEVUS federallisted Jul 10, 2026
- EUVDENISA, European Unionlisted Jul 10, 2026
- VulnCheck KEVcommercial researchlisted Jul 10, 2026
- CIRCLaggregator, mirrors the abovelisted Jul 10, 2026, not counted
3 catalogues list it. CIRCL aggregates the others and is shown but not counted.
Public exploitation evidence
- reported exploitationapi.vulncheck.com/v3/index/vulncheck-canaries?cve=CVE-2026-4
- reported exploitationapi.vulncheck.com/v3/index/vulncheck-canaries?cve=CVE-2026-4
- reported exploitationapi.vulncheck.com/v3/index/vulncheck-canaries?cve=CVE-2026-4
- reported exploitationapi.vulncheck.com/v3/index/vulncheck-canaries?cve=CVE-2026-4
- reported exploitationapi.vulncheck.com/v3/index/vulncheck-canaries?cve=CVE-2026-4
- reported exploitationapi.vulncheck.com/v3/index/vulncheck-canaries?cve=CVE-2026-4
21 public reports collected from VulnCheck and CIRCL, first on Jul 10, 2026. Each links to its original source. We have not verified them.
Description
A vulnerability in the iCagenda extension for Joomla allows the upload of arbitrary files in the file attachment feature, ultimately resulting in PHP code upload and execution.
Required action (CISA)
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
