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389-ds-base

A vulnerability in 389-ds-base allows an on-path attacker to inject a crafted LDAP message during StartTLS negotiation. The server does not discard plaintext bytes buffered from the client, leading to messageID collisions. This can cause a client to treat a failed authentication attempt as successful.

CVE-2026-86345 is a vulnerability in 389-ds-base where the server fails to discard plaintext bytes buffered from a client connection during StartTLS negotiation. This flaw enables an on-path attacker to inject a crafted LDAP message that is processed after the TLS upgrade. Due to messageID collision, the response to the injected message is delivered to the client instead of the client's own pending operation response. This can cause the client application to incorrectly treat a failed bind (authentication) attempt as successful.

A vulnerability in 389-ds-base allows an on-path attacker to inject a crafted LDAP message during StartTLS negotiation. The server does not discard plaintext bytes buffered from the client, leading to messageID collisions. This can cause a client to treat a failed authentication attempt as successfu

A flaw was found in 389-ds-base. (CVE-2026-86345)

Threats Tagged 'ubuntu-cve-2026-86345'

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