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CRITICAL

Narcissus backend.php Image Configuration Command Injection

Published Aug 5, 2025

Description

Narcissus is vulnerable to remote code execution via improper input handling in its image configuration workflow. Specifically, the backend.php script fails to sanitize the release parameter before passing it to the configure_image() function. This function invokes PHP’s passthru() with the unsanitized input, allowing attackers to inject arbitrary system commands. Exploitation occurs via a crafted POST request, resulting in command execution under the web server’s context.

Affected products

Remediation

No remediation recorded yet.

Metrics

References (5)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner VulnCheck
Published Aug 5, 2025
Updated Jul 28, 2026
Reserved Aug 5, 2025
CISA Vulnrichment
Updated Aug 6, 2025
NVD
Status Deferred
Modified Jun 16, 2026
Red Hat
Severity n/a
Public date n/a