A CRITICAL-severity vulnerability identified as CVE-2026-57828 has been published on July 11, 2026 with a CVSS base score of 9.0. This security advisory provides a detailed breakdown of the vulnerability, its potential impact, weakness classification, and actionable steps to protect your systems.
Vulnerability Details
CVE ID: CVE-2026-57828
Severity: CRITICAL
CVSS Score: 9.0
Published: July 11, 2026
Weakness (CWE): CWE-434
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | Low |
| User Interaction | None |
Technical Description
The Joomla extension Phoca Downloads is vulnerable to an authenticated arbitrary file upload that allows registered users uploading executable files and leads to full RCE.
Potential Impact
If exploited, this critical-severity vulnerability could allow an attacker to cause significant damage to affected systems. Organizations running affected software should treat this as a priority remediation item.
Recommended Action
No official patch is available yet. Until one is released:
- Monitor the official NVD page and vendor channels for patch announcements.
- Restrict access to the affected system or service where possible.
- Apply network-level mitigations such as firewall rules or WAF policies.
- Enable logging and alerting for anomalous activity related to this vulnerability.
- Review your incident response plan in case of active exploitation.
References
Related Security Advisories
- [HIGH] CVE-2025-24815 — CVSS 7.8 (June 30, 2026) — HIGH / CVSS 7.8
- [HIGH] CVE-2020-37227 — CVSS 8.8 (May 16, 2026) — HIGH / CVSS 8.8
- [CRITICAL] CVE-2026-28564 — CVSS 9.8 (July 10, 2026) — CRITICAL / CVSS 9.8
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