CVE-2023-43669

HIGH
7.5
CVSS Score
Published: September 21, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 06:26 AM UTC
2 products affected across 2 vendorsFedoraTungstenite

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Severity
HIGH7.5
Exploit prediction
EPSS 2%

Description

The Tungstenite crate before 0.20.1 for Rust allows remote attackers to cause a denial of service (minutes of CPU consumption) via an excessive length of an HTTP header in a client handshake. The length affects both how many times a parse is attempted (e.g., thousands of times) and the average amount of data for each parse attempt (e.g., millions of bytes).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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