CVE-2026-61672— Capsule租户绕过命名空间标签强制校验
一分钟漏洞结论
影响对象
projectcapsule capsule
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
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. W
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一、 漏洞 CVE-2026-61672 基础信息
漏洞信息
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
Capsule: Tenant owner bypasses Capsule's forbidden namespace/service/node label and annotation enforcement
来源: CVE Program / CVE List V5
Vulnerability 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.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
不充分的比较
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| projectcapsule | capsule | < 0.13.7 | - |
|
二、漏洞 CVE-2026-61672 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-61672 其他参考 (1)
-
Release v0.13.7 · projectcapsule/capsule · GitHub x_refsource_MISC
CVE-2026-61672 其他参考 (2)
同批安全公告 · projectcapsule · 2026-09-18 · 共 3 条
| CVE-2026-61794 | 6.8 MEDIUM | Capsule 恶意Regex触发命名空间准入恐慌 |
| CVE-2026-61795 | 6.8 MEDIUM | Capsule租户正则校验缺陷致Webhook绕过 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-61672
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