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CVE-2026-86345 Details

Description

A flaw was found in 389-ds-base. The server does not discard plaintext bytes already buffered from a client connection when negotiating StartTLS, allowing an on-path attacker to inject a crafted LDAP message that is processed after the TLS upgrade and whose response is delivered to the client in place of the client's own pending operation's response, due to messageID collision. This can cause a client application to treat a failed authentication (bind) attempt as successful.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:9 CRITICALVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://access.redhat.com/security/cve/CVE-2026-86345	[email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2529332	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-923	Improper Restriction of Communication Channel to Intended Endpoints	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes