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CVE-2020-35453

18
FAUCET Score

CVE-2020-35453 describes a vulnerability in HashiCorp Vault Enterprise's Sentinel EGP policy feature, where policies could incorrectly process requests in unintended parent and sibling namespaces. This medium-severity vulnerability (CVSS 5.3) has a low attack complexity and could lead to unauthorized information disclosure (I:L), though it does not impact confidentiality or availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE. Organizations using affected versions (prior to 1.5.6 and 1.6.1) should upgrade to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.5.0, < 1.5.6CPE matchmatch criteria
cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:*
>= 1.5.0, < 1.5.6CPE matchmatch criteria
cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:*
>= 1.6.0, < 1.6.1CPE matchmatch criteria
cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:*
>= 1.6.0, < 1.6.1CPE matchmatch criteria
cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.81%
Probability of exploitation in next 30 days
EPSS Percentile
53.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0081 is in the 33rd percentile among its peer group of 23,725 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2020-35453Moderate

vault: Sentinel EGP policy feature incorrectly allowed requests to be processed

Dec 16, 2020

References

discuss.hashicorp.com / t/hcsec-2020-24-vault-enterprise-s-sentinel-egp-policies-may-impact-parent-or-sibling-namespaces/18983
Vendor Advisory
github.com / hashicorp/vault/blob/master/CHANGELOG.md
Release Notes