CVE-2026-48939

10.0 CRITICAL 20% exploit odds Drop everything exploited in the wild No fix listed Code execution Web app

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
In the wild: CISA lists this as exploited in real attacks. Treat as urgent.
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2026-05-26 16:47 UTC ReservedThe CVE id was reserved by its CNA
2026-06-20 13:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-07-10 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
2026-07-13 Remediation deadlineCISA's due date for federal agencies to fix it
2026-10-25 23:10 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: yes, CISA lists it. This puts it above everything that is not.
Exploit odds: 20.1% in the next 30 days (EPSS).
Severity: 10.0 CRITICAL (CVSS).
Fix: none linked yet, which raises it.
It meets the bar for Drop everything: critical, and exploited or very likely to be.

Details

Published: 2026-06-20 13:16 UTC
Last modified: 2026-10-25 23:10 UTC
Added to CISA KEV: 2026-07-10
Exploit probability: 20.1% · EPSS, next 30 days
Weakness: CWE-434 · Unrestricted file upload
Record status: Analyzed

Affected

Joomlic Icagenda < 3.9.15
Joomlic Icagenda < 4.0.8

Attack profile CVSS 4.0 · 10.0

Attack vector: Network
Complexity: Low
Attack requirements: None
Privileges needed: None
User interaction: None
Confidentiality: High
Integrity: High
Availability: High

Raw vector

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:Red

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-48939.md and follow it. Check whether this project is affected by CVE-2026-48939. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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References

NVD record · CVE.org record