CVE-2026-48939 (GCVE-0-2026-48939)

Vulnerability from cvelistv5 – Published: 2026-06-20 11:56 – Updated: 2026-07-11 05:32
VLAI CISA KEVIntel
Title
Joomla Extension - icagenda.com - Remote Code Execution in iCaganda extension for Joomla < 4.0.8/3.9.15
Summary
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.
Severity
10 (Critical)
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
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
Credits
Phil Taylor
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 349ea528-8815-4e8a-812a-918abda44b5f

Vulnerability ID: CVE-2026-48939

Status: Confirmed

Status Updated: 2026-07-10 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2026-07-10
Asserted: 2026-07-10
Scope
Notes: iCagenda Unrestricted Upload of File with Dangerous Type Vulnerability | Affected: iCagenda / iCagenda | Description: iCagenda contains an unrestricted upload of file with dangerous type vulnerability that allows the upload of arbitrary files in the file attachment feature, ultimately resulting in PHP code upload and execution. | 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. | Due date: 2026-07-13 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://www.icagenda.com/#download ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-48939
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-434
Feed CISA Known Exploited Vulnerabilities Catalog
Product iCagenda
Due Date 2026-07-13
Date Added 2026-07-10
Vendorproject iCagenda
Vulnerabilityname iCagenda Unrestricted Upload of File with Dangerous Type Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-07-10 18:00 UTC | Updated: 2026-07-10 18:00 UTC
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: e8ce3b4b-518e-4cc5-ad71-9781806a54ef

Vulnerability ID: CVE-2026-48939

Status: Confirmed

Status Updated: 2026-07-10 17:00 UTC

Exploited: Yes

Timestamps
First Seen: 2026-07-10
Asserted: 2026-07-10
Scope
Notes: Joomla Extension - icagenda.com - Remote Code Execution in iCaganda extension for Joomla < 4.0.8/3.9.15 | Affected: icagenda.com / iCagenda extension for Joomla | CVSS: 10.0 (CRITICAL) | EPSS: 0.00564 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Joomla Extension - icagenda.com - Remote Code Execution in iCaganda extension for Joomla < 4.0.8/3.9.15
Vendor icagenda.com
Product iCagenda extension for Joomla
Added Date 2026-07-10T17:00:25.732Z
Cvss Score 10.0
Epss Score 0.00564
Cvss Severity CRITICAL
Epss Percentile 0.42883
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-07-10 18:00 UTC | Updated: 2026-07-10 18:00 UTC
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.