Security context
UnratedGO-2026-5199 CVE-2026-4525Published Jun 25, 2026

HashiCorp Vault May Expose Tokens to Auth Plugins Due to Incorrect Header Sanitization in github.com/hashicorp/vault

Research this vulnerability

Research is free — Hunters explains how the bug works, the root-cause code pattern, how the fix addresses it, and how to test whether a target is affected, in chat. Investigate & write exploit is a paid run — the engine reads the advisory and fix commits, then builds and validates a working proof-of-concept exploit with reproduction steps.

Affected versions

0.11.2 and later (no fix listed)

Details

HashiCorp Vault May Expose Tokens to Auth Plugins Due to Incorrect Header Sanitization in github.com/hashicorp/vault

The fix

No fix commit could be resolved for this advisory (it may reference an issue tracker or a non-GitHub patch). See the references below.

References