{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-59341",
        "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
        "state": "PUBLISHED",
        "assignerShortName": "vmware",
        "dateReserved": "2026-07-04T18:14:34.672Z",
        "datePublished": "2026-09-15T09:16:59.460Z",
        "dateUpdated": "2026-09-16T11:53:25.201Z"
    },
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        "cna": {
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                "orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
                "shortName": "vmware",
                "dateUpdated": "2026-09-15T09:16:59.460Z"
            },
            "title": "Sealed Secrets: decryption oracle via Go template injection in unauthenticated controller endpoints",
            "affected": [
                {
                    "vendor": "Bitnami",
                    "product": "sealed-secrets",
                    "repo": "https://github.com/bitnami/sealed-secrets",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThanOrEqual": "0.38.4",
                            "versionType": "semver"
                        },
                        {
                            "status": "unaffected",
                            "version": "0.40.0",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A security vulnerability exists in the Sealed Secrets controller's unauthenticated POST endpoints. By submitting a modified payload containing custom Go template logic in spec.template.data, an attacker with internal network access can abuse the handler as a decryption oracle to recover the full plaintext of any sealed secret.\n\n\n\nThe POST /v1/verify and /v1/rotate handlers call Unseal() to decrypt target secrets, then render any Go templates found in spec.template.data.* using the decrypted payload as the evaluation context (pkg/apis/sealedsecrets/v1alpha1/sealedsecret_expansion.go). Errors encountered during template execution are directly reflected in the resulting HTTP response status codes.\n\n\n\nMissing AEAD label binding: the spec.template.data field is omitted from the AEAD authenticated-data label binding ciphertext to metadata. As a result, an attacker can copy a target's valid metadata and encryptedData verbatim, satisfying AEAD decryption and label validation, while freely replacing spec.template.data with arbitrary template logic.\n\n\n\nSide-channel oracle: template execution errors map directly to HTTP response codes. HTTP 200 (OK) indicates template execution succeeded; HTTP 409 (Conflict) indicates template execution failed (e.g. via {{ fail \"...\" }}).\n\n\n\nBy injecting conditional statements such as {{ if eq (substr 0 1 .password) \"S\" }}ok{{ else }}{{ fail \"x\" }}{{ end }}, an attacker receives an HTTP 200 status when a character guess is correct and an HTTP 409 when it is incorrect. This differential response leaks one character-equality bit per request, allowing full secret extraction over successive queries.\n\n\n\nAttack vector & prerequisites: unauthenticated; requires network access to the controller's internal service port (:8080). Although this service is not exposed to the public internet by default, it is accessible to any pod within the Kubernetes cluster or via a kubectl port-forward connection.",
                    "supportingMedia": [
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                            "value": "<p>A security vulnerability exists in the Sealed Secrets controller's unauthenticated POST endpoints. By submitting a modified payload containing custom Go template logic in spec.template.data, an attacker with internal network access can abuse the handler as a decryption oracle to recover the full plaintext of any sealed secret.</p><p>The POST /v1/verify and /v1/rotate handlers call Unseal() to decrypt target secrets, then render any Go templates found in spec.template.data.* using the decrypted payload as the evaluation context (pkg/apis/sealedsecrets/v1alpha1/sealedsecret_expansion.go). Errors encountered during template execution are directly reflected in the resulting HTTP response status codes.</p><p>Missing AEAD label binding: the spec.template.data field is omitted from the AEAD authenticated-data label binding ciphertext to metadata. As a result, an attacker can copy a target's valid metadata and encryptedData verbatim, satisfying AEAD decryption and label validation, while freely replacing spec.template.data with arbitrary template logic.</p><p>Side-channel oracle: template execution errors map directly to HTTP response codes. HTTP 200 (OK) indicates template execution succeeded; HTTP 409 (Conflict) indicates template execution failed (e.g. via {{ fail \"...\" }}).</p><p>By injecting conditional statements such as {{ if eq (substr 0 1 .password) \"S\" }}ok{{ else }}{{ fail \"x\" }}{{ end }}, an attacker receives an HTTP 200 status when a character guess is correct and an HTTP 409 when it is incorrect. This differential response leaks one character-equality bit per request, allowing full secret extraction over successive queries.</p><p>Attack vector &amp; prerequisites: unauthenticated; requires network access to the controller's internal service port (:8080). Although this service is not exposed to the public internet by default, it is accessible to any pod within the Kubernetes cluster or via a kubectl port-forward connection.</p>"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://github.com/bitnami/sealed-secrets/security/advisories/GHSA-qj4p-m373-p2wg"
                },
                {
                    "url": "https://github.com/bitnami/sealed-secrets"
                }
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                    "cvssV3_1": {
                        "version": "3.1",
                        "attackVector": "NETWORK",
                        "attackComplexity": "HIGH",
                        "privilegesRequired": "HIGH",
                        "userInteraction": "REQUIRED",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "NONE",
                        "baseSeverity": "MEDIUM",
                        "baseScore": 4.2,
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N"
                    }
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        },
        "adp": [
            {
                "problemTypes": [
                    {
                        "descriptions": [
                            {
                                "type": "CWE",
                                "cweId": "CWE-203",
                                "lang": "en",
                                "description": "CWE-203 Observable Discrepancy"
                            }
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                "references": [
                    {
                        "url": "https://github.com/bitnami/sealed-secrets/security/advisories/GHSA-qj4p-m373-p2wg",
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                            "content": {
                                "timestamp": "2026-09-15T17:27:25.731287Z",
                                "id": "CVE-2026-59341",
                                "options": [
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                                        "Exploitation": "poc"
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                                    {
                                        "Automatable": "no"
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