Improper access control in external-secrets
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-284.
Summary
External Secrets Operator is a Kubernetes operator that integrates external secret management systems. From version 0.15.0 to before 0.19.2, a vulnerability was discovered where the List() calls for Kubernetes Secret and SecretStore resources performed by the PushSecret controller did not apply a namespace selector. This flaw allowed an attacker to use label selectors to list and read secrets/secret-stores across the cluster, bypassing intended namespace restrictions. An attacker with the ability to create or update PushSecret resources and control SecretStore configurations could exploit this vulnerability to exfiltrate sensitive data from arbitrary namespaces. This could lead to full disclosure of Kubernetes secrets, including credentials, tokens, and other sensitive information stored in the cluster. This vulnerability has been patched in version 0.19.2. A workaround for this issue includes auditing and restricting RBAC permissions so that only trusted service accounts can create or update PushSecret and SecretStore resources.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| external-secrets | external-secrets | 0.15.0 to before 0.19.2 | 0.19.2 | Patch available | CNA |
| — | github.com/external-secrets/external-secrets (Go) | 0.15.0 to before 0.19.2 | 0.19.2 | Patch available | GHSA-fcxq-v2r3-cc8h |
- external-secrets Vendorexternal-secrets Affected 0.15.0 to before 0.19.2 Fixed in 0.19.2 Patch available CNA
- github.com/external-secrets/external-secrets (Go) Vendor— Affected 0.15.0 to before 0.19.2 Fixed in 0.19.2 Patch available GHSA-fcxq-v2r3-cc8h
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:external-secrets:external_secrets_operator:*:*:*:*:*:*:*:* | — | — | external-secrets |
- cpe:2.3:a:external-secrets:external_secrets_operator:*:*:*:*:*:*:*:* Versions — — ·external-secrets
Remediation
- Fix · CNA external-secrets (external-secrets) Fixed in 0.19.2
- Fix · GHSA-fcxq-v2r3-cc8h github.com/external-secrets/external-secrets (Go) Fixed in 0.19.2 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-55196
- 2026-10-03 Alias added: GHSA-fcxq-v2r3-cc8h
References
Other 6
- https://github.com/external-secrets/external-secrets/security/advisories/GHSA-fcxq-v2r3-cc8h
- https://github.com/external-secrets/external-secrets/pull/5109
- https://github.com/external-secrets/external-secrets/pull/5133
- https://github.com/external-secrets/external-secrets/commit/39cdba5863533007b582dc63dd300839326b2f1d
- https://github.com/external-secrets/external-secrets/commit/de40e8f4fa9559c1d770bb674589b285da5ef2d1
- https://github.com/external-secrets/external-secrets
More external-secrets vulnerabilities
- TI-2024-30153 External Secrets Operator vulnerable to privilege escalation CVSS 3.1HIGH 8.8
- TI-2024-24309 Insecure permissions in external-secrets v0.9.16 allows attackers to access sensitive… CVSS 3.1CRITICAL 9.8
- TI-2026-18338 External Secrets Operator insecurely retrieves secrets through the getSecretKey templating function CVSS 4.0CRITICAL 9.3
- TI-2025-38481 External Secrets Operator's BeyondTrust Provider has Insecure Secret Retrieval CVSS 4.0HIGH 8.7
- TI-2026-31081 External Secrets Operator: Namespace Isolation Bypass in CAProvider ConfigMap Resolution for SecretStore CVSS 4.0MEDIUM 5.3
- TI-2026-68477 External Secrets Operator webhook generator skips label enforcement CVSS 3.1HIGH 7.1
Sources
- CVE-2025-55196 · CVE Program
- CVE-2025-55196 · NVD
- FIRST EPSS
- GHSA-fcxq-v2r3-cc8h · GitHub Advisory Database · CC BY 4.0
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