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MEDIUM severity

GHSA-6239-28c2-9mrm

MEDIUM

GHSA-6239-28c2-9mrm is a medium-severity (CVSS 5.3) CWE-212 vulnerability in github.com/hashicorp/vault. O3 Security confirms whether GHSA-6239-28c2-9mrm is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Improper Removal of Sensitive Information Before Storage or Transfer in HashiCorp Vault

Also known asBIT-vault-2021-38554CVE-2021-38554GO-2022-0632
Published
Aug 30, 2021
Updated
Feb 4, 2026
Affected
2 pkgs
Patched
2 / 2
Exploits
None indexed
Exploitation data as of Feb 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Real-World Exposure

2 pkgs affected
🐹github.com/hashicorp/vault🐹github.com/hashicorp/vault

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

HashiCorp Vault and Vault Enterprise’s UI erroneously cached and exposed user-viewed secrets between sessions in a single shared browser. Fixed in 1.8.0 and pending 1.7.4 / 1.6.6 releases.

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/hashicorp/vaultall versions1.6.6
🐹Gogithub.com/hashicorp/vault1.7.0&&< 1.7.41.7.4

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/hashicorp/vault. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update github.com/hashicorp/vault to 1.6.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-6239-28c2-9mrm is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-6239-28c2-9mrm is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-6239-28c2-9mrm. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

HashiCorp Vault and Vault Enterprise’s UI erroneously cached and exposed user-viewed secrets between sessions in a single shared browser. Fixed in 1.8.0 and pending 1.7.4 / 1.6.6 releases.
O3 Security · Impact-Aware SCA

Is GHSA-6239-28c2-9mrm in your dependencies?

O3 detects GHSA-6239-28c2-9mrm across Go dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

GHSA-6239-28c2-9mrm: vault (Medium 5.3) | O3 Security