CVE-2026-48939
CriticalExploitedPublic exploitA 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.
Published Jun 20, 2026 · Updated Aug 12, 2026 · Also known as EUVD-2026-38109, GHSA-4rh3-rmh3-hv6h
Key Facts
Patch immediately- CVE-2026-48939 is a critical-severity vulnerability (CVSS 10.0 v4) affecting Icagenda (Joomlic), iCagenda extension for Joomla.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 10, 2026. Public exploit code is available.
- EPSS estimates a 20% probability of exploitation in the next 30 days.
- Fixed versions are available, including Icagenda 3.9.15, Icagenda 4.0.8.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v4
10.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y/U:Red
EPSS (30-day exploit likelihood)
20%
Higher than 97.4% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
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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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Jul 10, 2026 | Jul 13, 2026 | Not reported |
| Industry KEV feed | Jul 10, 2026 | Jul 13, 2026 | Not reported |
| CIRCL KEV | Jul 10, 2026 | Jul 13, 2026 | Not reported |
| ENISA EUVD | Jul 10, 2026 | n/a | Not reported |
Required action: 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.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| IcagendaJoomlic | See advisory | 3.9.15 |
| iCagenda extension for Joomla | >= 1.0.0-3.9.14 | n/a |
Patched Releases
Icagenda
3.9.15, 4.0.8
Timeline
Publicly disclosed
Jun 20, 2026
Added to CISA KEV
Jul 10, 2026
Added to Industry KEV feed
Jul 10, 2026
Added to CIRCL KEV
Jul 10, 2026
Added to ENISA EUVD
Jul 10, 2026
Last updated
Aug 12, 2026
Weakness Type
- CWE-284 Improper Access Control
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
- advisoryhttp://soft-php.com
- advisoryhttps://www.exploit-db.com/exploits/41642
- advisoryhttps://www.exploit-db.com/exploits/41663
- advisoryhttps://www.exploit-db.com/exploits/41930
- advisoryhttps://www.exploit-db.com/exploits/42113
FAQ
Common Questions.
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.
Affected: Icagenda (Joomlic); iCagenda extension for Joomla versions >= 1.0.0-3.9.14. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 10, 2026.
Yes. It was added on Jul 10, 2026 with a federal remediation due date of Jul 13, 2026.
Public exploit code is available.
Fixed versions are available, including Icagenda 3.9.15, Icagenda 4.0.8.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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