Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.

CVE-2026-123612 Details

Description

rustls 0.23.44 and 0.23.45 contain an information disclosure vulnerability that sends application data buffered before the handshake completes to the client-facing server when Encrypted Client Hello is rejected. Because start_traffic() queues plaintext from ClientConnection::writer() before sending the ech_required alert, the authenticated public_name server receives data intended for the inner server.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:2.3 LOWVector:CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://github.com/rustls/rustls/security/advisories/GHSA-vp88-798v-h67f	[email protected]
https://www.vulncheck.com/advisories/rustls-0.23.44-and-0.23.45-ech-rejection-application-data-disclosure	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-696	Incorrect Behavior Order	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes