CVE-2021-38554
Improper Removal of Sensitive Information Before Storage or Transfer in HashiCorp Vault
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-38554- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:P/I:N/A:N - Weakness
- CWE-212
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2021-38554- Updated
- 2026-11-02
EUVDEUVD-2021-1586 No score
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.
- Record
EUVD-2021-1586- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6239-28c2-9mrm
Improper Removal of Sensitive Information Before Storage or Transfer in HashiCorp Vault
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.
- Record
GHSA-6239-28c2-9mrm- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-212
- Updated
- 2026-11-02
OSVALPINE-CVE-2021-38554
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.
- Record
ALPINE-CVE-2021-38554- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-03
OSV
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.
- Record
CVE-2021-38554- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-6239-28c2-9mrm
Improper Removal of Sensitive Information Before Storage or Transfer in HashiCorp Vault
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.
- Record
GHSA-6239-28c2-9mrm- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-212
- Updated
- 2026-11-02
OSVBIT-vault-2021-38554 No score
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.
- Record
BIT-vault-2021-38554- Updated
- 2026-11-02
OSVGO-2022-0632 No score
Improper Removal of Sensitive Information Before Storage or Transfer in HashiCorp Vault in github.com/hashicorp/vault
Improper Removal of Sensitive Information Before Storage or Transfer in HashiCorp Vault in github.com/hashicorp/vault
- Record
GO-2022-0632- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/hashicorp/vaultGo |
before 1.6.6 | 1.6.6 |
github.com/hashicorp/vaultGo |
1.7.0 up to 1.7.4 | 1.7.4 |
vaultAlpine:v3.14 |
before 1.7.4-r0 | 1.7.4-r0 |
vaultBitnami |
before 1.8.0 | 1.8.0 |
github.com/hashicorp/vaultGo |
before 1.6.6, 1.7.0 up to 1.7.4 | 1.6.61.7.4 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | OSV | |
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-38554 is a medium vulnerability (CVSS 5.3) in Hashicorp Vault, published August 13, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.91%, the 60th percentile. Fixed in github.com/hashicorp/vault 1.6.6.
References
discuss.hashicorp.com/t/hcsec-2021-19-vault-s-ui-cached-user-viewed-secrets-between-shared-browser-sessions/28166
security.gentoo.org/glsa/202207-01
nvd.nist.gov/vuln/detail/CVE-2021-38554
github.com/hashicorp/vault/releases/tag/v1.6.6
security.alpinelinux.org/vuln/CVE-2021-38554