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CVE-2026-22728— sealed-secrets /v1/rotate can widen sealing scope to cluster-wide via attacker-controlled template annotations

Quick assessment

Affected
Bitnami sealed-secrets
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.

Sealed Secrets是Bitnami Labs开源的一个配置加密工具 Sealed Secrets存在安全漏洞，该漏洞源于密钥轮换流程中存在范围扩大攻击，可能导致绕过原始约束并恢复明文凭据。

CVSS 4.9 · Medium EPSS 0.36% · P28
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I. Basic Information for CVE-2026-22728

Vulnerability Information
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Vulnerability Title
sealed-secrets /v1/rotate can widen sealing scope to cluster-wide via attacker-controlled template annotations
Source: CVE Program / CVE List V5
Vulnerability Description
Bitnami Sealed Secrets is vulnerable to a scope-widening attack during the secret rotation (/v1/rotate) flow. The rotation handler derives the sealing scope for the newly encrypted output from untrusted spec.template.metadata.annotations present in the input SealedSecret. By submitting a victim SealedSecret to the rotate endpoint with the annotation sealedsecrets.bitnami.com/cluster-wide=true injected into the template metadata, a remote attacker can obtain a rotated version of the secret that is cluster-wide. This bypasses original "strict" or "namespace-wide" constraints, allowing the attacker to retarget and unseal the secret in any namespace or under any name to recover the plaintext credentials.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Sealed Secrets 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sealed Secrets是Bitnami Labs开源的一个配置加密工具 Sealed Secrets存在安全漏洞，该漏洞源于密钥轮换流程中存在范围扩大攻击，可能导致绕过原始约束并恢复明文凭据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Bitnami sealed-secrets 0.35.0 ~ <0.36.0 -

II. Public POCs for CVE-2026-22728

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III. Intelligence Information for CVE-2026-22728

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Vendor Advisories for CVE-2026-22728 (1)

IV. Related Vulnerabilities

Same product: sealed-secrets
Same vendor: Bitnami
Same weakness: CWE-284

V. Comments for CVE-2026-22728

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