Golang
CVE-2026-27111
MEDIUM
GHSA-5vvm-67pj-72g4
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
Primary rating from GitHub Advisory.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
Lifecycle Timeline
3DescriptionGitHub Advisory
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.
AnalysisAI
Kargo versions 1.9.0 through 1.9.2 fail to enforce the custom "promote" authorization verb in three REST API endpoints, allowing authenticated users with standard Kubernetes RBAC permissions to trigger promotions without the intended fine-grained access controls. An attacker with patch permissions on freight status or create permissions on promotions can bypass promotion pipeline restrictions and advance software artifacts unauthorized. A patch is available to restore the missing authorization checks.
Technical ContextAI
Classified as CWE-862 (Missing Authorization). Affects Kargo. 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 K
RemediationAI
A vendor patch is available — apply it immediately. Restrict network access to the affected service where possible.
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Same weakness CWE-862 – Missing Authorization
View allVendor StatusVendor
SUSE
Severity: Low| Product | Status |
|---|---|
| openSUSE Leap 15.6 | Fixed |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | Fixed |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | Fixed |
| openSUSE Leap 15.5 | Fixed |
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External POC / Exploit Code
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