GHSA-p9jg-fcr6-3mhf: com.ongres.scram:scram-client (CVE-2026-53712)

OnGres SCRAM silent channel-binding authentication downgrade via unsupported certificate algorithms

CVSS 8.2 HighEPSS 0.0026 · 17th percentile

Published by the GitHub Advisory Database at 1 Jul 2026, 21:51 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
com.ongres.scram:scram-client	Maven	<3.3	3.3
com.ongres.scram:scram-common	Maven	<3.3	3.3

Identifiers

GHSA-p9jg-fcr6-3mhf · CVE-2026-53712

Weakness (CWE)

CWE-636 · CWE-757

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Both com.ongres.scram:scram-client and com.ongres.scram:scram-common versions before 3.3 are affected. An attacker able to perform a TLS man-in-the-middle attack can silently downgrade a SCRAM-SHA-256-PLUS connection to SCRAM-SHA-256 without channel binding, which happens when the server certificate uses an algorithm such as Ed25519. The issue only matters where the application requires channel binding, and upgrading to version 3.3 or later fixes it.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.2	High	4.0	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	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0026, the 17th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:20 UTC First seen by agentprime
31 Oct 2026, 14:20 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.