Live Exposure Defense: From CVE to Confirmed Exposure in 12 Hours – See more

Back
New CVE Detected

CVE-2026-62415 – Unauthenticated File Upload – Membership Pro extension for Joomla prior to 4.6.2

Be the first to know when new zero-days emerge:

Subscribe to Email Alerts
Subscribe to RSS Feed

Summary

CVE-2026-62415 is a critical unauthenticated file upload vulnerability in the Membership Pro extension for Joomla, developed by joomdonation.com. By default, versions prior to 4.6.2 allowed unauthenticated users to upload media assets to the server with no authentication or user interaction required. The vulnerability carries a CVSS v3.1 base score of 9.1, with High impact on both Confidentiality and Integrity.

Technical details

  • Root cause: CWE-1188 – Initialization of a Resource with an Insecure Default. The extension’s media upload functionality was enabled and exposed to unauthenticated users out of the box, with no access control enforced on the upload endpoint.
  • Trigger conditions: No authentication required; no user interaction needed; exploitable remotely over the network with low attack complexity.
  • Attack vector: Network-accessible HTTP/HTTPS endpoint targeting the com_osmembership component’s media upload functionality (identifiable via paths such as /media/com_osmembership/).
  • Impact: High impact on both Confidentiality and Integrity (CVSS C:H/I:H); no Availability impact. An attacker can write attacker-controlled files to the server without any credential.

Affected software

  • Membership Pro extension for Joomla (com_osmembership), versions 1.0 through 4.6.1 (all versions prior to 4.6.2)

Severity

CVSS v3.1 Base Score: 9.1 (Critical)
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Mitigation and recommended actions

  • Immediate action: Upgrade the Membership Pro extension to version 4.6.2 or later, released on July 21, 2026. The patched version restricts media upload access to authenticated and authorized users.
  • If patching is not immediately possible: Restrict access to the com_osmembership media upload endpoint at the web server or WAF level, and audit any files uploaded to /media/com_osmembership/ for unauthorized content.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts and recommends immediate patching. Potentially affected assets are outlined in this post.

References

Are you exposed?

Get a free report of your organization’s exposure to this CVE and threat

  • Mapping of all Assets with this Technology
  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
Get Exposure Report

How IONIX’s External Exposure Management Platform Detects and Validates
Zero-Days to Shrink MTTR

1

Map your entire attack surface (continously)

IONIX uses multi-factor discovery methods, including DNS analysis, certificate mapping, metadata inspection, and more, to automatically map every internet-facing asset across your environment. This includes cloud instances, third-party platforms, shadow IT, and even forgotten infrastructure that traditional tools miss.

2

Monitor for new CVEs

Dozens of threat intel feeds using agentic technology are continuously analyzed to detect the appearance of proof-of-concept code, exploit kits, and indicators of active targeting. IONIX goes further by applying AI to proactively evaluate whether emerging vulnerabilities are likely to be exploited, even before PoCs go public.

3

Identify Potential External Exposures

Not all CVEs matter. IONIX filters vulnerabilities by asking attacker-centric questions: Can it be reached from the internet? Does it require authentication? Is it being exploited in the wild? This dramatically reduces noise and focuses teams on threats that can actually be weaponized.

4

Create Safe, Scalable Exploit Validations

IONIX transforms real-world PoCs into safe, non-intrusive test payloads that can be run in production environments without disruption. These simulations are precisely targeted to the systems that are vulnerable, ensuring rapid validation without unnecessary load.

5

Execute Exploit Validations

By combining context about software stack, versioning, exposure status, and reachability, IONIX ensures that only the right payloads are executed against the right assets, maximizing efficiency and minimizing risk.

6

Drive Fast and Actionable Remediation

Results are routed through integrations with ticketing, SOAR, and SIEM tools. Issues are written in plain language, bundled into remediation clusters, and prioritized based on asset criticality, exploitability, and blast radius. This shortens mean time to remediation (MTTR) and empowers teams to act with confidence.

Are you exposed?

Get a free report of your organization’s exposure to this CVE and threat

  • Mapping of all Assets with this Technology
  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
Get Exposure Report
Close

Subscribe to Threat Center RSS

Copy/paste the link below into your preferred RSS reader or follow these instructions to subscribe to Slack alerts.

Open RSS feedSlack setup instructions

Close

Get Real-Time CVE Alerts to Your Email

Be the first to know when new zero-days emerge