Red Hat Gatekeeper 3 vulnerabilities

3 CVEs affecting Red Hat Gatekeeper 3, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-27145, published 2026-06-02.

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Known exploited (CISA KEV) first, then by EPSS exploit probability.

• CVE-2026-9277, published 2026-05-22. High severity, CVSS 8.1. EPSS: 0.8% chance of exploitation in the next 30 days. shell-quote's `quote()` function did not validate object-token inputs against the operator model used by `parse()`. The `.op` field was backslash-escaped character by character using `/(.)/g`, which…
• CVE-2026-27145, published 2026-06-02. Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days. (*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name (SAN) entries. This caused strings.Split(host, ".") to execute repeatedly on the…
• CVE-2025-69873, published 2026-02-11. Low severity, CVSS 2.9. EPSS: 0.5% chance of exploitation in the next 30 days. ajv (Another JSON Schema Validator) before 8.18.0 is vulnerable to Regular Expression Denial of Service (ReDoS) when the $data option is enabled. The pattern keyword accepts runtime data via JSON…