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TI-2026-21563 Aliases CVE-2026-27111GHSA-5vvm-67pj-72g4

Kargo has Missing Authorization Vulnerabilities in Approval & Promotion REST API Endpoints

Priority LOW 29CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-862.

Summary

Kargo manages and automates the promotion of software artifacts. From v1.9.0 to v1.9.2, Kargo's authorization model includes a promote verb -- a non-standard Kubernetes "dolphin verb" -- that gates the ability to advance Freight through a promotion pipeline. This verb exists to separate the ability to manage promotion-related resources from the ability to trigger promotions, enabling fine-grained access control over what is often a sensitive operation. The promote verb is correctly enforced in Kargo's legacy gRPC API. However, three endpoints in the newer REST API omit this check, relying only on standard Kubernetes RBAC for the underlying resource operations (patch on freights/status or create on promotions). This permits users who hold those standard permissions -- but who were deliberately not granted promote -- to bypass the intended authorization boundary. The affected endpoints are /v1beta1/projects/{project}/freight/{freight}/approve, /v1beta1/projects/{project}/stages/{stage}/promotions, and /v1beta1/projects/{project}/stages/{stage}/promotions/downstream. This vulnerability is fixed in v1.9.3.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00205 10th percentileScored 2026-11-07
Fix Fixed kargo (akuity): 1.9.3github.com/akuity/kargo (Go): 1.9.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
akuitykargo1.9.0 to before 1.9.31.9.3Patch availableCNA
—github.com/akuity/kargo (Go)1.9.0 to before 1.9.31.9.3Patch availableGHSA-5vvm-67pj-72g4
  • kargo Vendorakuity Affected 1.9.0 to before 1.9.3 Fixed in 1.9.3 Patch available CNA
  • github.com/akuity/kargo (Go) Vendor— Affected 1.9.0 to before 1.9.3 Fixed in 1.9.3 Patch available GHSA-5vvm-67pj-72g4

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:akuity:kargo:*:*:*:*:*:kubernetes:*:*1.9.0 to before 1.9.3Vulnerableakuity
  • cpe:2.3:a:akuity:kargo:*:*:*:*:*:kubernetes:*:* Versions 1.9.0 to before 1.9.3 Vulnerable ·akuity

Remediation

  • Fix · CNA kargo (akuity) Fixed in 1.9.3
  • Fix · GHSA-5vvm-67pj-72g4 github.com/akuity/kargo (Go) Fixed in 1.9.3 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-27111
  2. 2026-10-03 Alias added: GHSA-5vvm-67pj-72g4

References

Patch 1

Advisory 2

Other 1

  • TI-2026-21564 Kargo has an Authorization Bypass Vulnerability in Batch Resource Creation API Endpoints CVSS 4.0CRITICAL 9.4
  • TI-2026-19953 Kargo's `GetConfig()` and `RefreshResource()` API endpoints allow unauthenticated access CVSS 4.0MEDIUM 6.9
  • TI-2026-25295 Kargo: SSRF in Promotion http/http-download Steps Enables Internal Network Access and Data Exfiltration CVSS 4.0MEDIUM 5.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences