Is CVE-2026-27760 actively exploited?

Yes. CVE-2026-27760 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2026-27760 be exploited remotely?

Yes. CVE-2026-27760 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-27760?

CVE-2026-27760 has a CVSS score of 8.1 (HIGH).

HOME VULNERABILITIESCVE-2026-27760

HIGHCISA KEVIN THE WILD

CVE-2026-27760

CWE-94Published: April 28, 2026· Updated: Apr 28, 2026

8.1

CVSS v3.1

EPSS:0.10%probability of exploitation in 30 daysPercentile:26.6th

Official 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.

NVD Source

Technical Analysis

CVE-2026-27760 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.

CISA has added CVE-2026-27760 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.