CVE-2026-55069: kestra — Exploit & Fix

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.

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CVSS v3.1 Score

8.7

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

EPSS — Exploit Prediction

0.0016

Probability of exploitation

0.05%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-916 CWE-916

Affected Products

Vendor	Product	Versions
kestra	kestra	< 1.3.24

References

Advisories & Patches

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

Exploits

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

Frequently Asked Questions

What is CVE-2026-55069? +

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. It has a CVSS v3.1 base score of 8.7 (HIGH).

How severe is CVE-2026-55069? +

CVE-2026-55069 has a CVSS v3.1 score of 8.7 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0016, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-55069? +

CVE-2026-55069 affects products from kestra, specifically: kestra. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-55069? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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