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CVE-2026-4525 Vault Token Leaked to Backends via Authorization: Bearer Passthrough Header

🗓️ 17 Apr 2026 03:00:47Reported by HashiCorpType 
cvelist
 cvelist
🔗 www.cve.org👁 21 Views

Vault fixed leaking token to auth plugin backends when Authorization header passthrough is enabled.

Related
Affected
Refs
[
  {
    "defaultStatus": "unaffected",
    "platforms": [
      "64 bit",
      "32 bit",
      "x86",
      "ARM",
      "MacOS",
      "Windows",
      "Linux"
    ],
    "product": "Vault",
    "repo": "https://github.com/hashicorp/vault",
    "vendor": "HashiCorp",
    "versions": [
      {
        "lessThan": "2.0.0",
        "status": "affected",
        "version": "0.11.2",
        "versionType": "semver"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "platforms": [
      "64 bit",
      "32 bit",
      "x86",
      "ARM",
      "MacOS",
      "Windows",
      "Linux"
    ],
    "product": "Vault Enterprise",
    "repo": "https://github.com/hashicorp/vault",
    "vendor": "HashiCorp",
    "versions": [
      {
        "changes": [
          {
            "at": "1.19.16",
            "status": "unaffected"
          },
          {
            "at": "1.20.10",
            "status": "unaffected"
          },
          {
            "at": "1.21.5",
            "status": "unaffected"
          }
        ],
        "lessThan": "2.0.0",
        "status": "affected",
        "version": "0.11.2",
        "versionType": "semver"
      }
    ]
  }
]

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