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CVE-2026-53712— SCRAM: Silent channel-binding authentication downgrade via unsupported certificate algorithms

Quick assessment

Affected
ongres scram
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OnGres SCRAM Java Implementation是OnGres公司的一款SCRAM协议的Java实现数据库系统。 OnGres SCRAM Java Implementation 3.3之前版本存在安全漏洞，该漏洞源于com.ongres.scram:scram-client和com.ongres.scram:scram-common中存在缺陷，当TlsServerEndpoint使用现代签名算法（如Ed25519）处理X.509证书时，getChannelBindingData()可能返

AI Predicted 6.5 Difficulty: Hard EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 1

VendorProduct Version RangeStatus
ongres scram < 3.3 affected
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I. Basic Information for CVE-2026-53712

Vulnerability Information
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Vulnerability Title
SCRAM: Silent channel-binding authentication downgrade via unsupported certificate algorithms
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
未能安全地进行程序失效(Failing Open)
Source: CVE Program / CVE List V5
Vulnerability Title
OnGres SCRAM Java Implementation 异常处理不当漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OnGres SCRAM Java Implementation是OnGres公司的一款SCRAM协议的Java实现数据库系统。 OnGres SCRAM Java Implementation 3.3之前版本存在安全漏洞，该漏洞源于com.ongres.scram:scram-client和com.ongres.scram:scram-common中存在缺陷，当TlsServerEndpoint使用现代签名算法（如Ed25519）处理X.509证书时，getChannelBindingData()可能返
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ongres scram < 3.3 -

II. Public POCs for CVE-2026-53712

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III. Intelligence Information for CVE-2026-53712

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Vendor Advisories for CVE-2026-53712 (1)

Other References for CVE-2026-53712 (1)

IV. Related Vulnerabilities

Same product: scram
Same vendor: ongres
Same weakness: CWE-636

V. Comments for CVE-2026-53712

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