CVE-2023-43669
The Tungstenite crate before 0.20.1 for Rust allows remote attackers to cause a denial of service (minutes of CPU consumption) via an…
- Published
- Updated
- Reserved
- Assigned by
- mitre
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).
Timeline
Published
- 11 months later
· 11 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 2.1% · top 19% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- n/a
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- crates.iotungsteniteGHSA-9mcr-873m-xcxp (opens in a new tab)
References (12)
- https://github.com/snapview/tungstenite-rs/issues/376 (opens in a new tab)x_transferred
- https://cwe.mitre.org/data/definitions/407.html (opens in a new tab)x_transferred
- https://crates.io/crates/tungstenite/versions (opens in a new tab)x_transferred
- https://github.com/snapview/tungstenite-rs/commit/8b3ecd3cc0008145ab4bc8d0657c39d09db8c7e2 (opens in a new tab)x_transferred
- https://github.com/advisories/GHSA-9mcr-873m-xcxp (opens in a new tab)x_transferred
- https://github.com/github/advisory-database/pull/2752 (opens in a new tab)x_transferred
- https://bugzilla.suse.com/show_bug.cgi?id=1215563 (opens in a new tab)x_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=2240110 (opens in a new tab)x_transferred
- https://security-tracker.debian.org/tracker/CVE-2023-43669 (opens in a new tab)x_transferred
- FEDORA-2023-91a66898d2 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2023-e72bf7b92e (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2023-9c4142423a (opens in a new tab)vendor-advisoryx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-9mcr-873m-xcxp (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-43669)Record last updated .