GHSA-wv26-88m5-6h59

Source

https://github.com/advisories/GHSA-wv26-88m5-6h59

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-wv26-88m5-6h59/GHSA-wv26-88m5-6h59.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-wv26-88m5-6h59

Aliases

Downstream

CGA (36)

MINI (2)

Published

2026-05-05T18:37:12Z

Modified

2026-09-10T03:50:47Z

Severity

5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N CVSS Calculator

Summary

External Secrets Operator has Namespace Isolation Bypass in CAProvider ConfigMap Resolution for SecretStore

Details

Impact

Namespaced SecretStore resources that used CAProvider with type ConfigMap could resolve CA material from another namespace when caProvider.namespace was set. This bypassed the namespace boundary enforced for SecretStore-backed references in providers that rely on the shared runtime CA resolver.

The accessible data is used as CA validation material, hence it is not directly exposed.

Impact:

Direct data exfiltration risk: low
Existence disclosure: an attacker can infer whether a target ConfigMap/key exists in another namespace.
Trust-boundary violation: a tenant can make its SecretStore consume CA material owned by another namespace.

Database specific

{
    "cwe_ids":  [
        "CWE-285",
        "CWE-668"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-05-05T18:37:12Z",
    "nvd_published_at":  "2026-05-11T20:25:44Z",
    "severity":  "MODERATE"
}

References

Affected packages

Go / github.com/external-secrets/external-secrets

Package

Name: github.com/external-secrets/external-secrets; View open source insights on deps.dev
Purl: pkg:golang/github.com/external-secrets/external-secrets

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

2.4.0

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-wv26-88m5-6h59/GHSA-wv26-88m5-6h59.json"