Insecure Defaults
Published Jan 19, 2021
5.3
MEDIUMCVSS 3.1
EPSS 0.73%
Description
The package socket.io before 2.4.0 are vulnerable to Insecure Defaults due to CORS Misconfiguration. All domains are whitelisted by default.
Affected products
- Vendor n/a Product Socket.io Defaultn/a
- Version unspecifiedStatusaffectedConstraints<2.4.0
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Socket.io | n/a |
|
No data.
No Red Hat product state for this CVE.
socket.io
npm
Introduced 0 Fixed 2.4.0
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | socket.io | 0 | 2.4.0 |
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
1 other source (CVE.org) ▾
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.73% (0.00730) | 52.64th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.73% (0.00730) | 52.77th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.16% (0.00162) | 53.31th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.16% (0.00162) | 52.29th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.13% (0.00126) | 45.41th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00950) | 28.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.73% (0.06726) | 78.88th | v2 (v2022.01.01) |
| Feb 3, 2022 | 4.50% (0.04504) | 76.47th | v1 |
| Jan 6, 2022 | 4.50% (0.04504) | 76.26th | v1 |
| Jan 5, 2022 | 1.04% (0.01040) | 65.70th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
References (7)
- https://github.com/advisories/GHSA-fxwf-4rqh-v8g3 Advisory
- https://github.com/socketio/socket.io/commit/f78a575f66ab693c3ea96ea88429ddb1a44c86c7
- https://github.com/socketio/socket.io/issues/3671 x_refsource_MISCExploitThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2020-28481
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1056358 x_refsource_MISCThird Party Advisory
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1056357 x_refsource_MISCThird Party Advisory
- https://snyk.io/vuln/SNYK-JS-SOCKETIO-1024859 x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/advisories/GHSA-fxwf-4rqh-v8g3 | Advisory | |
| https://github.com/socketio/socket.io/commit/f78a575f66ab693c3ea96ea88429ddb1a44c86c7 | ||
| https://github.com/socketio/socket.io/issues/3671 | x_refsource_MISCExploitThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2020-28481 | ||
| https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1056358 | x_refsource_MISCThird Party Advisory | |
| https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1056357 | x_refsource_MISCThird Party Advisory | |
| https://snyk.io/vuln/SNYK-JS-SOCKETIO-1024859 | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.