What is CVE-2021-4260?

CVE-2021-4260 is a medium-severity vulnerability in Oils-Js Project, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.3/10. Published 2022-12-19.

How severe is CVE-2021-4260?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Open Redirect in Oils-Js Project

CVE-2021-4260

A vulnerability was found in oils-js. It has been declared as critical. This vulnerability affects unknown code of the file core/Web.js. The manipulation leads to open redirect. The attack can be initiated remotely. The name of the patch is fad8fbae824a7d367dacb90d56cb02c5cb999d42. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-216268.

Vulnerability class: Open Redirect

Published 2022-12-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.004 (30.8th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

github.com/mannyvergel/oils-js/commit/fad8fbae824a7d367dacb90d56cb02c5cb999d42 (Patch, Third Party Advisory)
vuldb.com/ (Third Party Advisory)

Frequently asked questions

What is CVE-2021-4260?: CVE-2021-4260 is a medium-severity vulnerability in Oils-Js Project, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.3/10. Published 2022-12-19.
How severe is CVE-2021-4260?: Medium severity. CVSS v3 base score is 6.3 out of 10.