What is CVE-2026-27760?

CVE-2026-27760 is a high-severity vulnerability in Opencats, classified under Code Injection. CVSS score: 8.1/10. Published 2026-04-28.

How severe is CVE-2026-27760?

High severity. CVSS v3 base score is 8.1 out of 10.

RCE in Opencats

CVE-2026-27760

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 pa…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.001 (33.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Opencats — versions 0, 3002a29f4c3cada1aa2c4f3d4ae4e189906606b6

Weakness classification (CWE)

CWE-94 — Code Injection

References

disclosure@vulncheck.com (technical-description, exploit)
disclosure@vulncheck.com (issue-tracking)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (related)
disclosure@vulncheck.com (related)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-27760?: CVE-2026-27760 is a high-severity vulnerability in Opencats, classified under Code Injection. CVSS score: 8.1/10. Published 2026-04-28.
How severe is CVE-2026-27760?: High severity. CVSS v3 base score is 8.1 out of 10.