9.2

CVE-2026-27760

Exploit

OpenCATS PHP Code Injection via installer AJAX endpoint

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
Herstelleropencats
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Produkt OpenCATS
Default Statusunaffected
Version <= 0.9.7.4
Version 0
Status affected
Version 3002a29f4c3cada1aa2c4f3d4ae4e189906606b6
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 22.19% 0.974
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
disclosure@vulncheck.com 8.1 2.2 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
disclosure@vulncheck.com 9.2 0 0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE-94 Improper Control of Generation of Code ('Code Injection')

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

https://chocapikk.com/posts/2026/opencats-installer-rce/
https://github.com/opencats/OpenCATS/pull/706
https://github.com/opencats/OpenCATS/commit/3002a29f4c3cada1aa2c4f3d4ae4e189906606b6
https://github.com/opencats/OpenCATS/blob/46e4727/lib/CATSUtility.php#L142-L172
https://github.com/opencats/OpenCATS/blob/46e4727/modules/install/ajax/ui.php#L130
https://www.vulncheck.com/advisories/opencats-php-code-injection-via-installer-ajax-endpoint