CVE-2026-4525GO-2026-5199BIT-VAULT-2026-4525GHSA-72GW-FMMR-C4R4
Vault Token Leaked to Backends via Authorization: Bearer Passthrough Header
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2.0.0, 1.19.16
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- HashiCorp Vault
From 0.11.2 · fixed in 2.0.0
- HashiCorp Vault Enterprise
From 0.11.2 · fixed in 1.19.16
- github.com/hashicorp/vaultGo
From 0.11.2
- github.com/hashicorp/vaultGo
From 0.11.2 · through 1.21.4