# CVE-2025-55205: Capsule tenant owners with "patch namespace" permission can hijack system namespaces label

Source: https://junglewise.ai/threats/cve-2025-55205-capsule-tenant-owners-with-patch-namespace-permission-can-hijack  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-08-29  
License: CC BY 4.0 with a link back

CVE-2025-55205 · Severity: low · CVSS 3.1 · Published 2025-08-29

Capsule tenant owners with "patch namespace" permission can hijack system namespaces label in github.com/projectcapsule/capsule

Technologies: [github.com/projectcapsule/capsule (Go)](https://junglewise.ai/threats/technologies/github-com-projectcapsule-capsule). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2025-55205 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-55205 being exploited in the wild.

**How severe is CVE-2025-55205?** Low severity, with a CVSS score of 3.1, published 29 August 2025.

**Which products and versions are affected?** github.com/projectcapsule/capsule (Go) SEMVER:introduced=0,fixed=0.10.4.

**Is there a fix for CVE-2025-55205?** Yes. github.com/projectcapsule/capsule (Go): upgrade to 0.10.4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2025-55205?** Check whether you run github.com/projectcapsule/capsule (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/projectcapsule/capsule (Go): upgrade to 0.10.4 or later

  ```sh
  go get github.com/projectcapsule/capsule@v0.10.4
  ```


## Affected products

- github.com/projectcapsule/capsule (Go) SEMVER:introduced=0,fixed=0.10.4

## Identifiers

- CVE-2025-55205
- GHSA-fcpm-6mxq-m5vv
- GO-2025-3893

## Related threats

- [Capsule hostnameRegexHandler parameter order bypass in webhook validation](https://junglewise.ai/threats/cve-2026-61795-capsule-hostnameregexhandler-parameter-order-bypass-in-webhook)
- [Capsule Tenant ForbiddenAnnotations.Regex validation bypass](https://junglewise.ai/threats/cve-2026-61794-capsule-tenant-forbiddenannotations-regex-validation-bypass)
- [Capsule forbidden namespace/service/node label and annotation enforcement bypass](https://junglewise.ai/threats/cve-2026-61672-capsule-forbidden-namespace-service-node-label-and-annotation)
- [Clastix Capsule incorrect authorization via typo in namespaces/finalize webhook](https://junglewise.ai/threats/cve-2026-55636-clastix-capsule-incorrect-authorization-via-typo-in-namespaces)
- [Project Capsule privilege escalation in TenantResource controller](https://junglewise.ai/threats/cve-2026-65835-project-capsule-privilege-escalation-in-tenantresource-controller)