Tungstenite allows remote attackers to cause a denial of service
Published Sep 21, 2023 · Updated Oct 23, 2026 · Also known as RUSTSEC-2023-0065, GHSA-9mcr-873m-xcxp
Original summary
Normalized public record · Updated Oct 23, 2026
Tungstenite allows remote attackers to cause a denial of service
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
The Tungstenite crate through 0.20.0 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).
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- MEDIUM
- Confidence
- 10%
- Aliases
- RUSTSEC-2023-0065, GHSA-9mcr-873m-xcxp
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- GitHub advisory ↗
- cwe.mitre.org ↗
- crates.io ↗
- Patch commit ↗
- Source repository ↗
- Source repository ↗
- bugzilla.suse.com ↗
- bugzilla.redhat.com ↗
- security-tracker.debian.org ↗
- FEDORA-2023-91a66898d2 ↗
- FEDORA-2023-e72bf7b92e ↗
- FEDORA-2023-9c4142423a ↗
Record history
Published Sep 21, 2023 · Last refreshed Oct 23, 2026