# CVE-2026-53712

## Summary

- **CVE ID:** CVE-2026-53712
- **Severity:** HIGH
- **CVSS Score:** 8.2 (CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:L/SA:N)
- **CWE:** CWE-636, CWE-757
- **Published:** Jul 17, 2026
- **Last Modified:** Jul 17, 2026

## Description

SCRAM (Salted Challenge Response Authentication Mechanism) is part of the family of Simple Authentication and Security Layer (SASL, RFC 4422) authentication mechanisms. Prior to 3.3, a flaw in com.ongres.scram:scram-client and com.ongres.scram:scram-common allows an attacker capable of a TLS man-in-the-middle attack to silently downgrade a connection from SCRAM-SHA-256-PLUS with channel binding to standard SCRAM-SHA-256 without channel binding when TlsServerEndpoint processes an X.509 certificate using a modern signature algorithm such as Ed25519; getChannelBindingData() can return an empty byte array after NoSuchAlgorithmException, and the ScramClient builder treats that as absent channel-binding data. This issue is fixed in version 3.3.

## Affected Products

- ongres — scram (< 3.3)

## References

- [CNA](https://github.com/ongres/scram/security/advisories/GHSA-p9jg-fcr6-3mhf)
- [CNA](https://github.com/ongres/scram/releases/tag/3.3)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.26%
- **EPSS Percentile:** 17.7

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