CVE-2026-61794Public exploitNetwork attack vector

Tenant-scoped denial of service via wrong regex validation

Published Sep 18, 2026 · Updated Sep 18, 2026

Improper input validation in Project Capsule Capsule 0.13.0 through 0.13.6 allows remote authenticated users to interrupt namespace admission. Tenant update validation compiles ForbiddenLabels.Regex when checking annotations, allowing malformed ForbiddenAnnotations.Regex to reach regexp.MustCompile. Administrator permission to update a Tenant is required; namespace creation or update can then panic admission for that tenant.

CVSS severity4.9
Medium
EPSS probability0.59%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Project Capsule Capsule 0.13.0 through 0.13.6 allows remote authenticated users to interrupt namespace admission. Tenant update validation compiles ForbiddenLabels.Regex when checking annotations, allowing malformed ForbiddenAnnotations.Regex to reach regexp.MustCompile. Administrator permission to update a Tenant is required; namespace creation or update can then panic admission for that tenant.

The record

CVE
CVE-2026-61794
Published
Sep 18, 2026
Updated
Sep 18, 2026
Vendor
Project Capsule
Product
Capsule
Classifications
CWE-20, T1499
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.13.0, < 0.13.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Project Capsule · Capsuleversion=>= 0.13.0, < 0.13.7

Published CVSS scores

4.9GitHubCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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