CVSS v3
7.5
HIGH
Score EPSS
0.9 %
probabilité d’exploitation au 2026-09-28
CISA KEV
Non
exploitation connue
Exploitation
—
statut SSVC
Description
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy copies every decoded HTTP/2 Host header value before discarding it when :authority is already present. The discarded value bypasses saveHeader, so its bytes and count are not charged against request header limits. An unauthenticated client can use HPACK indexing to submit many references to a large Host value across a bounded number of streams, forcing extrem
Détails techniques
- Publiée le
- 2026-09-21
- Dernière modification
- 2026-09-21
Questions fréquentes
Qu’est-ce que CVE-2026-73550 ?
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy copies every decoded HTTP/2 Host header value before discarding it when :authority is already present. The discarded value bypasses saveHeader, so its bytes and count are not charged against request header limits. An unauthenticated client can use HPACK indexing to submit many references to a large Host value across a bounded number of streams, forcing extrem
CVE-2026-73550 est-elle activement exploitée ?
Aucune exploitation active de CVE-2026-73550 n’est confirmée. Son score EPSS était de 0.9 % au 2026-09-28, soit la probabilité estimée d’exploitation dans les 30 prochains jours.
Quel est le score CVSS de CVE-2026-73550 ?
CVE-2026-73550 a un score de base CVSS v3 de 7.5 (gravité HIGH).
CVE-2026-73550 touche-t-elle votre environnement ?
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