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CVE-2024-23656

21
FAUCET Score

CVE-2024-23656 affects Dex, an OpenID Connect identity service, specifically versions 2.37.0. The vulnerability allows Dex to serve HTTPS using insecure TLS 1.0 and 1.1 protocols, despite configuration attempts to enforce TLS 1.2, due to an issue introduced with the TLS cert reloader. This is a high-severity vulnerability (CVSS 7.5) with a low attack complexity, allowing unauthenticated remote attackers to compromise confidentiality. While there is no known active exploitation, public exploit code, or significant community discussion, organizations using affected Dex versions should upgrade to 2.38.0 immediately to mitigate the risk.

Impacted Technologies

VendorProductVersion(s)CPE
2.37.0CPE matchmatch criteria
cpe:2.3:a:linuxfoundation:dex:2.37.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 14th percentile among its peer group of 51,485 CVEs.

Social Chatter

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 (3)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/dexidp/dexFixed in: 2.38.0
gopatch availablevia ghsa
Product: github.com/dexidp/dexFixed in: 0.0.0-20240125115555-5bbdb4420254

Vendor Advisories (1)

goGHSA-gr79-9v6v-gc9rhigh

Dex discarding TLSconfig and always serves deprecated TLS 1.0/1.1 and insecure ciphers

Jan 26, 2024

References

github.com / dexidp/dex/blob/70d7a2c7c1bb2646b1a540e49616cbc39622fb83/cmd/dex/serve.go
Product
github.com / dexidp/dex/commit/5bbdb4420254ba73b9c4df4775fe7bdacf233b17
Patch
github.com / dexidp/dex/issues/2848
Issue Tracking
github.com / dexidp/dex/pull/2964
Issue TrackingPatch
github.com / dexidp/dex/security/advisories/GHSA-gr79-9v6v-gc9r
Exploit