CVE-2026-48939 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-48939CRITICAL

icagenda.com iCagenda extension for Joomla — Joomla Extension - icagenda.com - Remote Code Execution in iCaganda extension for Joomla < 4.0.8/3.9.15

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   H   H   H   10.0   .8250   99.6   YES

AFFECTED
  Product                        Versions       Fixed
  iCagenda extension for Joomla  3.2.1-4.0.7 –  —

TIMELINE
  May 26  Reserved by Joomla
  Jul 10  Added to CISA KEV, remediation due 2026-07-13
  Jul 10  Published (CNA: Joomla)
  Jul 14  DUE DATE PASSED — CVE-2026-48939 (icagenda.com iCagenda extension for Joomla). CISA remediation deadline was July 13, 2026; still in catalog.
  Aug 11  EXPLOIT PUBLISHED — CVE-2026-48939 (icagenda.com iCagenda extension for Joomla). Public exploit reference added.

CWE-434 · CNA: Joomla · CVSS v4.0 · 6 references · NVD status: Analyzed · KEV due July 13, 2026

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.

Lifecycle

Complete event history — 5 events, chronological
Date	Event	Detail
May 26, 2026	Reserved	Reserved by Joomla
July 10, 2026	KEV ADDED	Added to CISA KEV, remediation due 2026-07-13
July 10, 2026	Published	Published (CNA: Joomla)
July 14, 2026	DUE DATE PASSED	DUE DATE PASSED — CVE-2026-48939 (icagenda.com iCagenda extension for Joomla). CISA remediation deadline was July 13, 2026; still in catalog.
August 11, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-48939 (icagenda.com iCagenda extension for Joomla). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
icagenda.com	iCagenda extension for Joomla	—	3.2.1-4.0.7	—

Weaknesses

CWE-434

References (6)

https://github.com/Polosss/By-Poloss..-..CVE-2026-48939 [Exploit, Third Party Advisory]
https://mysites.guru/blog/icagenda-zero-day-file-upload-rce/ [Third Party Advisory]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-48939 [US Government Resource]
https://www.icagenda.com/ [Product]
https://www.icagenda.com/docs/changelog/icagenda-3-9-15 [Release Notes]
https://www.icagenda.com/docs/changelog/icagenda-4-0-8 [Release Notes]

Authoritative record: CVE-2026-48939 at cve.org

Vendors: icagenda.com

Weaknesses: CWE-434

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-48939 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.