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CVE-2023-3518

19
FAUCET Score

CVE-2023-3518 is a vulnerability in HashiCorp Consul and Consul Enterprise versions 1.16.0 that allows for incorrect access control when using JWT authentication for service mesh, potentially granting or denying access regardless of defined service identities. This flaw carries a CVSS score of 7.3 (HIGH), indicating it can be exploited remotely with low complexity, leading to potential impacts on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
1.16.0CPE matchmatch criteria
cpe:2.3:a:hashicorp:consul:1.16.0:*:*:*:enterprise:*:*:*
1.16.0CPE matchmatch criteria
cpe:2.3:a:hashicorp:consul:1.16.0:-:*:*:-:*:*:*
1.16.0CPE matchmatch criteria
cpe:2.3:a:hashicorp:consul:1.16.0:rc1:*:*:-:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.4HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.1
Impact Score
3.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 11th percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

gopatch availablevia ghsa
Product: github.com/hashicorp/consulFixed in: 1.16.1

Vendor Advisories (1)

goGHSA-9rhf-q362-77mxhigh

Consul JWT Auth in L7 Intentions Allow for Mismatched Service Identity and JWT Providers

Aug 9, 2023

References

discuss.hashicorp.com / t/hcsec-2023-25-consul-jwt-auth-in-l7-intentions-allow-for-mismatched-service-identity-and-jwt-providers/57004
Vendor Advisory