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2607 articles · 111484 vulns · 36/41 feeds (7d)
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7.5
CVE-2026-4525EXPLOITEDPATCHED
hashi · vault

Vault Token Leaked to Backends via Authorization: Bearer Passthrough Header

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.

Affected Products

VendorProductVersions
hashivault0.11.2, 0.11.2

References

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

Related News (1 articles)

Tier C
VulDB13h ago
CVE-2026-4525 | HashiCorp Vault/Vault Enterprise up to 1.21.0 Header Authorization insertion of sensitive information into sent data
→ No new info (linked only)
CVSS 3.17.5 HIGH
VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA KEV❌ No
Actively exploited✅ Yes
Patch available
2.0.0
CWECWE-201
PublishedApr 17, 2026
Last enriched12h agov2
Trending Score49
Source articles1
Independent1
Info Completeness9/14
Missing: epss, kev, exploit, iocs, mitre_attack

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Related CVEs (5)

HIGHCVE-2026-3605EXP
Vault KVv2 Metadata and Secret Deletion Policy Bypass Denial-of-Service
Trending: 49
MEDIUMCVE-2026-5052
Vault Vulnerable to Server-Side Request Forgery in ACME Challenge Validation via Attacker-Controlled DNS
Trending: 43
HIGHCVE-2026-5807
Vault Vulnerable to Denial-of-Service via Unauthenticated Root Token Generation/Rekey Operations
Trending: 35
PRE-CVE
Vault KVv2 Metadata and Secret Deletion Policy Bypass and Server-Side Request Forgery Vulnerabilities
Trending: 20
HIGHCVE-2026-4660
Go-getter may allow to arbitrary filesystem reads through git operations
Trending: 9

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Verification

State: unverified
Confidence: 0%

Vulnerability Timeline

CVE Published
Apr 17, 2026
Discovered by ZDM
Apr 17, 2026
Updated: description, affectedVersions, severity, activelyExploited
Apr 17, 2026
Actively Exploited
Apr 17, 2026
Patch Available
Apr 17, 2026

Version History

v2
Last enriched 12h ago
v2Tier C12h ago

Updated description with new details, changed vendor to 'hashicorp', added product 'vault enterprise', included new affected version '1.21.0', updated severity to 'MEDIUM', and marked as actively exploited.

descriptionaffectedVersionsseverityactivelyExploited
via VulDB
v114h ago

Initial creation