What is CVE-2026-53576?

CVE-2026-53576 is a critical-severity vulnerability in Kestra-io Kestra, classified under Code Injection. CVSS score: 10.0/10. Published 2026-06-26.

How severe is CVE-2026-53576?

Critical severity. CVSS v3 base score is 10.0 out of 10.

RCE in Kestra-io Kestra

CVE-2026-53576

Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the authentication filter for the REST API (@Filter("/api/v1/**")) treats any request whose path ends in /configs as the public instance-config endp…

Vulnerability class: RCE (Remote Code Execution)

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Kestra-io Kestra — versions < 1.0.45, >= 1.1.0, < 1.3.21

Weakness classification (CWE)

CWE-94 — Code Injection
CWE-288 — Authentication Bypass Using an Alternate Path or Channel

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-53576?: CVE-2026-53576 is a critical-severity vulnerability in Kestra-io Kestra, classified under Code Injection. CVSS score: 10.0/10. Published 2026-06-26.
How severe is CVE-2026-53576?: Critical severity. CVSS v3 base score is 10.0 out of 10.