Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 7.7 | High | 3.1 | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H | CNA (fedora) |
- CISA KEV Not listed.
- EPSS 0.0030, the 22nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
Sources
- GitHub Advisory Database: GHSA-mpwj-fcr6-x34c
- OSV: GHSA-mpwj-fcr6-x34c
- nvd.nist.gov/vuln/detail/CVE-2021-4435
- github.com/yarnpkg/yarn/commit/67fcce88935e45092ffa2674c08053f1ef5268a1
- access.redhat.com/security/cve/CVE-2021-4435
- bugzilla.redhat.com/show_bug.cgi?id=2262284
- github.com/yarnpkg/yarn
- github.com/yarnpkg/yarn/releases/tag/v1.22.13