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Vulnerabilities CVE-2026-27760

CVE-2026-27760

Critical
Open
TLP:CLEAR

OpenCATS PHP Code Injection via installer AJAX endpoint

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Description

OpenCATS prior to commit 3002a29 contains a PHP code injection vulnerability in the installer AJAX endpoint that allows unauthenticated attackers to execute arbitrary code by injecting PHP statements into the databaseConnectivity action parameter. Attackers can break out of the define() string context in config.php using a single quote and statement separator to inject malicious PHP code that persists and executes on every subsequent page load when the installation wizard remains incomplete.

Details

CVSS Score
9.2
EPSS Score
34.63%

98.3th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Confidence
90%
Published
Apr 28, 2026
Last Modified
Jul 14, 2026
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