CVE-2026-65834: projectcapsule capsule · Improper Input Validation
Affects projectcapsule capsuleSource CVE Database V5
Not known to be exploited · CVSS 6.8 Medium : upgrade to 0.13.8 when convenient.
Data as of 29 Oct 2026, 07:15 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 25% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 0.13.8
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 30 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade capsule and projectcapsule/capsule to 0.13.8.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| projectcapsulecapsule | Affected
| Fixed in
|
GitHubprojectcapsule/capsulepkg:github/projectcapsule/capsuleOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade to projectcapsule Capsule version 0.13.8 or later, where the configuration admission webhook properly validates regex inputs to prevent malformed patterns. Patch status is confirmed fixed in 0.13.8. No other mitigation is indicated.
Description
Capsule is a multi-tenancy and policy-based framework for Kubernetes. Prior to 0.13.8, CapsuleConfiguration.Spec.NodeMetadata.ForbiddenLabels.Regex and CapsuleConfiguration.Spec.NodeMetadata.ForbiddenAnnotations.Regex were not validated by the configuration admission webhook, allowing a Cluster Admin to store a malformed regex that later reached regexp.MustCompile in pkg/api/forbidden_list.go through internal/webhook/node/user_metadata.go and crashed the node admission webhook on Node create, update, or patch requests. This issue is fixed in version 0.13.8.