HIGH CVSS 8.7
Published: 2026-05-19

CVE-2026-27173

apache apache-airflow-providers-cncf-kubernetes Security Advisory (CVE-2026-27173)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-27173 impacting apache apache-airflow-providers-cncf-kubernetes. Evaluated with CVSS Base Score of 8.7 (HIGH).

Original NVD Description

Source: NIST NVD
JWT tokens that were used by workers in Kubernetes Executors have been exposed to users who had read only access to Kuberentes Pods. This could allow users with just read-only access to perform actions that were only available to running tasks via Task SDK and potentially allow to modify state of Airflow Database for tasks.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Local (AV:L)
Requires local system execution permissions
Attack Complexity
Low (AC:L)
No specialized conditions required
Privileges Required
Low (PR:L)
Standard user access required
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
Low (A:L)
Partial service performance degradation

🎯 Affected Versions Matrix

Affected Product apache / apache-airflow-providers-cncf-kubernetes
Affected Versions *
Weakness Enumeration CWE-538

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-2026-27173 impacting apache apache-airflow-providers-cncf-kubernetes.

⚡ Nuclei Detection Template (YAML) cve-2026-27173.yaml
id: cve-2026-27173

info:
  name: apache apache-airflow-providers-cncf-kubernetes - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: high
  description: |
    Automated signature & scanner for CVE-2026-27173 affecting apache apache-airflow-providers-cncf-kubernetes.
    Evaluation: JWT tokens that were used by workers in Kubernetes Executors have been exposed to users who had read only access to Kuberentes Pods. This could allow ...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-27173
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
    cvss-score: 8.7
    cve-id: CVE-2026-27173
    cwe-id: CWE-538
  tags: cve,cve-2026-27173,apache,apache-airflow-providers-,high

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "apache-airflow-providers-cncf-kubernetes"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2026-27173.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-27173
# Target: apache apache-airflow-providers-cncf-kubernetes | 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-2026-27173 (apache apache-airflow-providers-cncf-kubernetes)...")
    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 apache apache-airflow-providers-cncf-kubernetes 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-2026-27173.sh
# Recommended Remediation & Patching Commands for CVE-2026-27173
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install apache-airflow-providers- 2>/dev/null || \
sudo dnf upgrade apache-airflow-providers- 2>/dev/null || \
sudo yum update apache-airflow-providers-

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

# 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

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2026-27173 in apache apache-airflow-providers-cncf-kubernetes?

Review vendor-specific security notices and update apache apache-airflow-providers-cncf-kubernetes 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-2026-27173?

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-2026-27173?

CVE-2026-27173 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-2026-27173
Weakness CWE-538
Vendor apache
Product apache-airflow-providers-cncf-kubernetes
Published 2026-05-19
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L