VulnerabilityModified
CVE-2020-28481
The package socket.io before 2.4.0 are vulnerable to Insecure Defaults due to CORS Misconfiguration.
MEDIUM 4.3EPSS 0.74%
Does this matter?
Lower severity and a low EPSS score (0.74%). Track it; it rarely justifies an emergency change on its own.
Description
The package socket.io before 2.4.0 are vulnerable to Insecure Defaults due to CORS Misconfiguration. All domains are whitelisted by default.
- CVSS 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 0.74% probability · 54th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-346
- Affected
- socket/socket.io
- Source
- report@snyk.io
EPSS 0.7% 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://github.com/socketio/socket.io/issues/3671Exploit, Third Party Advisory
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1056358Third Party Advisory
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1056357Third Party Advisory
- https://snyk.io/vuln/SNYK-JS-SOCKETIO-1024859Third Party Advisory
- https://github.com/socketio/socket.io/issues/3671Exploit, Third Party Advisory
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1056358Third Party Advisory
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1056357Third Party Advisory
- https://snyk.io/vuln/SNYK-JS-SOCKETIO-1024859Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.