CVE-2020-27813
An integer overflow vulnerability exists with the length of websocket frames received via a websocket connection.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.19%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.19% probability · 82th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-190, CWE-400
- Affected
- gorillatoolkit/websocket · debian/debian linux
- Source
- secalert@redhat.com
EPSS 2.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1902111Issue Tracking, Third Party Advisory
- https://github.com/gorilla/websocket/security/advisories/GHSA-jf24-p9p9-4rjhThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/01/msg00008.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/05/msg00012.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1902111Issue Tracking, Third Party Advisory
- https://github.com/gorilla/websocket/security/advisories/GHSA-jf24-p9p9-4rjhThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/01/msg00008.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/05/msg00012.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.