CVE-2020-27813
HIGH
7.5
CVSS Score
Published: December 2, 2020 at 12:00 AM UTC
Updated: June 17, 2026 at 03:09 AM UTC
3 products affected across 3 vendorsDebian LinuxWebsocketGolang GitHub Gorilla Websocket
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Severity
HIGH7.5
Exploit prediction
EPSS 2%
Description
An integer overflow vulnerability exists with the length of websocket frames received via a websocket connection. An attacker would use this flaw to cause a denial of service attack on an HTTP Server allowing websocket connections.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%v < 1.4.1
Affected range stops below 1.4.1, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (4)
Issue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1902111Third Party Advisory
Source: [email protected]
https://github.com/gorilla/websocket/security/advisories/GHSA-jf24-p9p9-4rjhMailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/01/msg00008.htmlCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-190
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