CVE-2023-43669
CVSS v3
7.5
HIGH
EPSS Score
2.1 %
exploit probability, as of 2026-10-19
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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Affected and fixed versions
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Packages
- tungstenitecrates.iofrom 0.0.0-0 · fixed in 0.20.1
Vendor advisories
- CVE-2023-43669 Red Hat Product Security
rust-tungstenite: remote denial of service
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).
Technical details
- Published
- 2023-09-21
Frequently asked questions
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