HIGH 7.5 Go
HashiCorp Vault May Expose Tokens to Auth Plugins Due to Incorrect Header Sanitization
GHSA-72gw-fmmr-c4r4 · BIT-vault-2026-4525 · CVE-2026-4525 · GO-2026-5199
Published · Modified
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Description
If a Vault auth mount is configured to pass through the "Authorization" header, and the "Authorization" header is used to authenticate to Vault, Vault forwarded the Vault token to the auth plugin backend. Fixed in 2.0.0, 1.21.5, 1.20.10, and 1.19.16.
References
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-4525
- WEB https://access.redhat.com/security/cve/CVE-2026-4525
- WEB https://bugzilla.redhat.com/show_bug.cgi?id=2459107
- WEB https://discuss.hashicorp.com/t/hcsec-2026-07-vault-may-expose-tokens-to-auth-plugins-due-to-incorrect-header-sanitization/77344
- ADVISORY https://github.com/advisories/GHSA-72gw-fmmr-c4r4
- PACKAGE https://github.com/hashicorp/vault
- WEB https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4525.json
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