HIGH CVSS 8.7
Published: 2026-06-26

CVE-2026-55069

kestra kestra Security Advisory (CVE-2026-55069)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-55069 impacting kestra kestra. Evaluated with CVSS Base Score of 8.7 (HIGH).

Original NVD Description

Source: NIST NVD
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.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
High (AC:H)
Depends on race conditions or environment
Privileges Required
None (PR:N)
Unauthenticated execution
User Interaction
None (UI:N)
Zero human interaction required
Scope
Changed (S:C)
Impacts components beyond caller authority
Confidentiality
High (C:H)
Total information disclosure
Integrity
High (I:H)
Total modification of target system
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product kestra / kestra
Affected Versions *
Weakness Enumeration CWE-916

Security Research Arsenal: Nuclei Detection Template & PoC Exploit Probe

High-Intent Research Tool

Ready-to-use security scanner signatures, active verification probe skeletons, and remediation playbooks for CVE-2026-55069 impacting kestra kestra.

⚡ Nuclei Detection Template (YAML) cve-2026-55069.yaml
id: cve-2026-55069

info:
  name: kestra kestra - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: high
  description: |
    Automated signature & scanner for CVE-2026-55069 affecting kestra kestra.
    Evaluation: Kestra is an open-source, event-driven orchestration platform. Prior to 1.3.24, this vulnerability exists in the BasicAuth authentication component of...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-55069
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
    cvss-score: 8.7
    cve-id: CVE-2026-55069
    cwe-id: CWE-916
  tags: cve,cve-2026-55069,kestra,kestra,high

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "kestra"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2026-55069.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-55069
# Target: kestra kestra | CVSS: 8.7 (HIGH)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2026-55069 (kestra kestra)...")
    headers = {
        "User-Agent": "CyberVault-Audit-Scanner/2.0",
        "Accept": "*/*"
    }
    try:
        r = requests.get(f"{target_url.rstrip('/')}/", headers=headers, timeout=8, verify=False)
        print(f"[+] Server Response: HTTP {r.status_code} | Server Banner: {r.headers.get('Server', 'Unknown')}")
        if r.status_code < 500:
            print(f"[!] Target reachable. Verify version against kestra kestra scope (*).")
        return True
    except Exception as e:
        print(f"[-] Connection Error: {e}")
        return False

if __name__ == '__main__':
    url = sys.argv[1] if len(sys.argv) > 1 else "http://localhost:8080"
    verify_vulnerability(url)
🛡️ Quick Patch & Remediation Script (Bash) patch_cve-2026-55069.sh
# Recommended Remediation & Patching Commands for CVE-2026-55069
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install kestra 2>/dev/null || \
sudo dnf upgrade kestra 2>/dev/null || \
sudo yum update kestra

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i kestra 2>/dev/null || rpm -qa | grep -i kestra

# 3. Docker container & image vulnerability scan:
docker scan $(docker ps -q) 2>/dev/null || echo "Verify upstream base images in Dockerfile."

🛡️ Remediation & Security Action

  • Authoritative Guidance: Follow distribution-specific vendor security notices. Advisory status and package patches vary by distribution release.
  • Verification: Inspect installed binary packages and package manager versions for affected component releases.
  • Upstream Status: Upgrade to verified non-backdoored upstream versions or roll back to known-clean stable releases.
⚠️ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

🔗 Verified Technical References

Authorities
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Distributions
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❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2026-55069 in kestra kestra?

Review vendor-specific security notices and update kestra kestra packages to the latest patched release immediately. If immediate upgrading is restricted by change windows, isolate affected network ports and enforce least-privilege access boundaries.

Is there an active exploit or public PoC for CVE-2026-55069?

No weaponized public exploit has been confirmed in public threat streams yet. Continuous surveillance is active across GitHub and security feeds.

What is the CVSS 3.1 severity rating and impact for CVE-2026-55069?

CVE-2026-55069 is classified with a CVSS 3.1 Base Score of 8.7 (HIGH). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
8.7
HIGH SEVERITY
CVE ID CVE-2026-55069
Weakness CWE-916
Vendor kestra
Product kestra
Published 2026-06-26
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N