# CVE-2024-23656

## Summary

- **CVE ID:** CVE-2024-23656
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
- **CWE:** CWE-326, CWE-757
- **Published:** Jan 25, 2024
- **Last Modified:** Mar 13, 2026

## Description

Dex is an identity service that uses OpenID Connect to drive authentication for other apps. Dex 2.37.0 serves HTTPS with insecure TLS 1.0 and TLS 1.1. `cmd/dex/serve.go` line 425 seemingly sets TLS 1.2 as minimum version, but the whole `tlsConfig` is ignored after `TLS cert reloader` was introduced in v2.37.0. Configured cipher suites are not respected either. This issue is fixed in Dex 2.38.0.

## Affected Products

- dexidp — dex (= 2.37.0)

## References

- [CNA](https://github.com/dexidp/dex/security/advisories/GHSA-gr79-9v6v-gc9r)
- [CNA](https://github.com/dexidp/dex/issues/2848)
- [CNA](https://github.com/dexidp/dex/pull/2964)
- [CNA](https://github.com/dexidp/dex/commit/5bbdb4420254ba73b9c4df4775fe7bdacf233b17)
- [CNA](https://github.com/dexidp/dex/blob/70d7a2c7c1bb2646b1a540e49616cbc39622fb83/cmd/dex/serve.go#L425)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.43%
- **EPSS Percentile:** 36.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._