> CVE-2026-61672 [HIGH]

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PUBLISHED
2026-09-18 17:16
MODIFIED
2026-09-18 17:16
CVSS_SCORE V3
7.1
EPSS (Prob. Exploit)
0.33%
Top 74.8%
DATA SOURCES:
NVD 🔗 2026-09-18 CWE MITRE 🔗 2026-10-01 FIRST EPSS 🔗 2026-10-18 GITHUB 🔗 2026-09-24 OSV 🔗 2026-09-25

> DESCRIPTION

Capsule is a multi-tenancy and policy-based framework for Kubernetes. Prior to 0.13.7, ForbiddenListSpec.ExactMatch in pkg/api/forbidden_list.go sorts denied metadata keys case-insensitively and then uses sort.SearchStrings, which assumes byte-order sorting. When an administrator's forbidden list mixes capitalized and lowercase keys or otherwise has different case-insensitive and byte ordering, the binary search can return false for a key that is present. An authenticated tenant owner can then pass the missed key through api.ValidateForbidden and bypass configured namespace, Service, or delegated node metadata restrictions, potentially influencing cluster policies, network exposure, or scheduling outside the tenant boundary. Uniformly lowercase lists whose two orderings coincide are not affected. This issue is fixed in version 0.13.7.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:N
EXPLOITABILITY
1.8
IMPACT
4.7

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
High (H)
Conditions spécifiques doivent être réunies pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Changed (C)
Impact s'étend au-delà du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
Low (L)
Divulgation limitée d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
Low
Divulgation limitée d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-697 CWE-863

> CWE DETAILED DESCRIPTIONS

CWE-697: Incorrect Comparison - The product compares two entities in a security-relevant context, but the comparison is incorrect. | CWE-863: Incorrect Authorization - The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

> GITHUB SECURITY ADVISORY

GHSA-gjw4-3v3v-rqxg HIGH

Capsule: Tenant owner bypasses Capsule's forbidden namespace/service/node label and annotation enforcement

AFFECTED PACKAGES:
GO / github.com/projectcapsule/capsule
<= 0.13.6
Fixed in: 0.13.7

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Capsule: Tenant owner bypasses Capsule's forbidden namespace/service/node label and annotation enforcement

AFFECTED PACKAGES:
Unknown / Unknown
106 versions affected
ALIASES:
GHSA-gjw4-3v3v-rqxg

> HISTORIQUE DES MODIFICATIONS

Première apparition
18/09/2026 17:16
Source: NVD
📊 ENRICHISSEMENT 01/10/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-697: Incorrect Comparison - The product compares two entities in a security-relevant context, but the comparison is incorrect. | CWE-863: Incorrect Authorization - The product performs an authoriz...
Total des modifications: 1 Dernière mise à jour: 3 weeks ago

> REFERENCES

https://github.com/projectcapsule/capsule/commit/755cef54bf4a1bc56d6692130132bc7...
https://github.com/projectcapsule/capsule/pull/1982
https://github.com/projectcapsule/capsule/releases/tag/v0.13.7
https://github.com/projectcapsule/capsule/security/advisories/GHSA-gjw4-3v3v-rqx...
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