CVE-2026-55069

Kestra BasicAuth Password Stored as SHA-512 Enables Offline Brute-Force Attack

State: Published
Severity: 8.7 High
Published: Jun 26, 2026
Updated: Jun 29, 2026
Reserved: Jun 16, 2026

Description

Kestra is an open-source, event-driven orchestration platform. Prior to 1.3.24, this vulnerability exists in the BasicAuth authentication component of the Kestra OSS workflow orchestration platform. An attacker who gains read access to the PostgreSQL database can exploit SHA-512's high computation speed to recover the administrator password offline. In Kubernetes deployments, a successful crack further enables reading of the cluster ServiceAccount Token and all K8s Secrets, achieving vertical privilege escalation. This vulnerability is fixed in 1.3.24.

Scores

CVSS	Score	Vector	Source
3.1	8.7 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N	GitHub_M

Weaknesses

CWE-916 Use of Password Hash With Insufficient Computational Effort

Affected Products

Product	Versions
kestrakestra-io	< 1.3.24Affected

References

https://github.com/kestra-io/kestra/security/advisories/GHSA-m727-pcjm-j28h

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