CVE-2026-4525HIGH 7.5EPSS p33.4%

CVE-2026-4525CVE-2026-4525

hashicorp / vault

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.

Scoring

CVSS 3.17.5 (HIGH)
VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS0.41% probability of exploitation · percentile 33.4% · 2026-08-03T12:00:16Z
Published2026-04-17
Last modified2026-07-15

Underlying weaknesses· 1

CWE-201

References

  1. https://discuss.hashicorp.com/t/hcsec-2026-07-vault-may-expose-tokens-to-auth-plugins-due-to-incorrect-header-sanitization/77344

1

TypeTargetConfidenceTier
WeaknessInsertion of Sensitive Information Into Sent Datacwe-2010%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.