Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-93540— Fleet applies namespace labels and annotations without the bundle's service account privileges

Quick assessment

Affected
SUSE Rancher
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Fleet 中发现了一个权限不匹配漏洞。当 Bundle 通过 和 选项请求命名空间的标签（labels）或注解（annotations）时，由此产生的命名空间元数据更新未受到与 Bundle 部署其他部分相同的授权控制。因此，即使 Bundle 所绑定的身份（identity）没有权限修改目标命名空间，它仍然能够更改该命名空间的标签和注解。 此漏洞影响 SUSE Rancher Fleet 的以下版本：0.16（早于 0.16.2）、0.15（早于 0.15.7）、0.14（早于 0.14.11）、0.13（

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1078.004 · Cloud Accounts
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-93540

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Fleet applies namespace labels and annotations without the bundle's service account privileges
Source: CVE Program / CVE List V5
Vulnerability Description
A privilege mismatch was found in Fleet. When a bundle requested namespace labels or annotations through the namespaceLabels and namespaceAnnotations options, the resulting namespace metadata update was not subject to the same authorization as the rest of the bundle's deployment. As a result, a bundle could change labels and annotations on a target namespace even when the identity it was pinned to was not authorized to modify that namespace. This affected SUSE Rancher Fleet 0.16 before 0.16.2, 0.15 before 0.15.7, 0.14 before 0.14.11, 0.13 before 0.13.16 and potentially older versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
特权授予不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
SUSE Rancher 0.16.0 ~ 0.16.1 -

II. Public POCs for CVE-2026-93540

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-93540

请登录查看更多情报信息。

Other References for CVE-2026-93540 (1)

Same Patch Batch · SUSE · 2026-09-28 · 5 CVEs total

CVE-2026-78424 8.8 HIGH OS Command Injection in Packet-Capture (Sniffer) Filter leading to Remote Code Execution o
CVE-2026-93538 7.1 HIGH Cross-tenant BundleDeployment and Secret disclosure via spoofed cluster labels during agen
CVE-2026-93537 6.5 MEDIUM Path traversal in Fleet Helm valuesFiles allows disclosure of files outside the bundle dir
CVE-2026-93539 5.4 MEDIUM Unauthenticated GitRepo Spec Mutation via Fleet Git Webhook Receiver

IV. Related Vulnerabilities

Same product: Rancher
Same vendor: SUSE
Same weakness: CWE-266

V. Comments for CVE-2026-93540

No comments yet

Leave a comment