7.5Hoch

CVE-2026-97031Reject malformed ECH outer extension references in crypto/tls

Go standard library crypto/tls Veröffentlicht: 2026-10-09 01:53 (vor 1 Monat)

Beschreibung

Multiple ECH outer extension references are not permitted under RFC 9849; previously, a client could send a well-crafted packet that could trigger memory exhaustion in the server process by specifying multiple references. We now reject these as malformed and curb the memory amplification vector as a result.

Schwachstellentyp (CWE): CWE-405

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

Hersteller	Produkt	Versionen
Go standard library	crypto/tls	< 1.26.9, 1.27.0-0 – < 1.27.2

Referenzen und Patches

CVSS-Score

7.5Hoch

Quelle: CISA-ADP · CVSS 3.1

Angriffsvektor: Netzwerk
Komplexität: Niedrig
Rechte erforderlich: Keine
Benutzerinteraktion: Keine
Geltungsbereich: Unverändert
Vertraulichkeit: Keine
Integrität: Keine
Verfügbarkeit: Hoch

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Alle Scores (2)

CISA-ADP	CVSS 3.1	7.5Hoch
134c704f-9b21-4f2e-91b3-4a467353bcc0	CVSS 3.1	7.5Hoch

EPSS (Ausnutzungswahrscheinlichkeit in 30 Tagen)

0.72%

höher als 54 % aller CVEs

CISA-Bewertung (SSVC)

Ausnutzung: none
Automatisierbar: yes
Technische Auswirkung: partial

Zeitverlauf

ID reserviert2026-09-23
Veröffentlicht2026-10-09 01:53
Bei IP-DB eingegangen2026-10-24 23:42
Zuletzt aktualisiert2026-10-09 19:35

Vergeben von (CNA): Go
NVD-Status: Awaiting Analysis

In der Quelle ansehen: CVE.org · NVD

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