| Name | CVE-2020-7774 | 
| Description | The package y18n before 3.2.2, 4.0.1 and 5.0.5, is vulnerable to Prototype Pollution. | 
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) | 
| Debian Bugs | 976390 | 
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status | 
|---|
| node-y18n (PTS) | bullseye | 4.0.0-4 | fixed | 
|  | forky, sid, bookworm, trixie | 5.0.8+~5.0.0-3 | fixed | 
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs | 
|---|
| node-y18n | source | stretch | (unfixed) | end-of-life |  |  | 
| node-y18n | source | buster | 3.2.1-2+deb10u1 |  |  |  | 
| node-y18n | source | (unstable) | 4.0.0-3 |  |  | 976390 | 
Notes
[stretch] - node-y18n <end-of-life> (Nodejs in stretch not covered by security support)
https://snyk.io/vuln/SNYK-JS-Y18N-1021887
https://github.com/yargs/y18n/issues/96
https://github.com/yargs/y18n/pull/108