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Package Instance

Lookup for vulnerable packages by Package URL.

Purlpkg:npm/y18n@3.2.2
Typenpm
Namespace
Namey18n
Version3.2.2
Qualifiers
Subpath
Is_vulnerablefalse
Next_non_vulnerable_version4.0.1
Latest_non_vulnerable_version5.0.5
Affected_by_vulnerabilities
Fixing_vulnerabilities
0
url VCID-fu8u-pxaa-43be
vulnerability_id VCID-fu8u-pxaa-43be
summary 
Prototype Pollution in y18n
### Overview

The npm package `y18n` before versions 3.2.2, 4.0.1, and 5.0.5 is vulnerable to Prototype Pollution. 

### POC

```js
const y18n = require('y18n')();

y18n.setLocale('__proto__');
y18n.updateLocale({polluted: true});

console.log(polluted); // true
```

### Recommendation

Upgrade to version 3.2.2, 4.0.1, 5.0.5 or later.
references
0
reference_url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-7774.json
reference_id
reference_type
scores
0
value 7.3
scoring_system cvssv3
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-7774.json
1
reference_url https://api.first.org/data/v1/epss?cve=CVE-2020-7774
reference_id
reference_type
scores
0
value 0.00469
scoring_system epss
scoring_elements 0.64581
published_at 2026-04-18T12:55:00Z
1
value 0.00469
scoring_system epss
scoring_elements 0.64576
published_at 2026-04-11T12:55:00Z
2
value 0.00469
scoring_system epss
scoring_elements 0.64569
published_at 2026-04-16T12:55:00Z
3
value 0.00469
scoring_system epss
scoring_elements 0.64536
published_at 2026-04-13T12:55:00Z
4
value 0.00469
scoring_system epss
scoring_elements 0.64564
published_at 2026-04-12T12:55:00Z
5
value 0.00469
scoring_system epss
scoring_elements 0.64455
published_at 2026-04-01T12:55:00Z
6
value 0.00469
scoring_system epss
scoring_elements 0.64509
published_at 2026-04-02T12:55:00Z
7
value 0.00469
scoring_system epss
scoring_elements 0.64538
published_at 2026-04-04T12:55:00Z
8
value 0.00469
scoring_system epss
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value 0.00469
scoring_system epss
scoring_elements 0.64545
published_at 2026-04-08T12:55:00Z
10
value 0.00469
scoring_system epss
scoring_elements 0.64561
published_at 2026-04-09T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2020-7774
2
reference_url https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
reference_id
reference_type
scores
0
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
3
reference_url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7774
reference_id
reference_type
scores
url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7774
4
reference_url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
reference_id
reference_type
scores
0
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
5
reference_url https://github.com/yargs/y18n
reference_id
reference_type
scores
0
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://github.com/yargs/y18n
6
reference_url https://github.com/yargs/y18n/commit/90401eea9062ad498f4f792e3fff8008c4c193a3
reference_id
reference_type
scores
0
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://github.com/yargs/y18n/commit/90401eea9062ad498f4f792e3fff8008c4c193a3
7
reference_url https://github.com/yargs/y18n/commit/a9ac604abf756dec9687be3843e2c93bfe581f25
reference_id
reference_type
scores
0
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://github.com/yargs/y18n/commit/a9ac604abf756dec9687be3843e2c93bfe581f25
8
reference_url https://github.com/yargs/y18n/issues/96
reference_id
reference_type
scores
0
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://github.com/yargs/y18n/issues/96
9
reference_url https://github.com/yargs/y18n/pull/108
reference_id
reference_type
scores
0
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://github.com/yargs/y18n/pull/108
10
reference_url https://nvd.nist.gov/vuln/detail/CVE-2020-7774
reference_id
reference_type
scores
0
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2020-7774
11
reference_url https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1038306
reference_id
reference_type
scores
0
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1038306
12
reference_url https://snyk.io/vuln/SNYK-JS-Y18N-1021887
reference_id
reference_type
scores
0
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://snyk.io/vuln/SNYK-JS-Y18N-1021887
13
reference_url https://www.oracle.com/security-alerts/cpuApr2021.html
reference_id
reference_type
scores
0
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://www.oracle.com/security-alerts/cpuApr2021.html
14
reference_url https://bugzilla.redhat.com/show_bug.cgi?id=1898680
reference_id 1898680
reference_type
scores
url https://bugzilla.redhat.com/show_bug.cgi?id=1898680
15
reference_url https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=976390
reference_id 976390
reference_type
scores
url https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=976390
16
reference_url https://github.com/advisories/GHSA-c4w7-xm78-47vh
reference_id GHSA-c4w7-xm78-47vh
reference_type
scores
0
value HIGH
scoring_system cvssv3.1_qr
scoring_elements
url https://github.com/advisories/GHSA-c4w7-xm78-47vh
17
reference_url https://security.gentoo.org/glsa/202405-29
reference_id GLSA-202405-29
reference_type
scores
url https://security.gentoo.org/glsa/202405-29
18
reference_url https://access.redhat.com/errata/RHSA-2020:5305
reference_id RHSA-2020:5305
reference_type
scores
url https://access.redhat.com/errata/RHSA-2020:5305
19
reference_url https://access.redhat.com/errata/RHSA-2020:5499
reference_id RHSA-2020:5499
reference_type
scores
url https://access.redhat.com/errata/RHSA-2020:5499
20
reference_url https://access.redhat.com/errata/RHSA-2020:5633
reference_id RHSA-2020:5633
reference_type
scores
url https://access.redhat.com/errata/RHSA-2020:5633
21
reference_url https://access.redhat.com/errata/RHSA-2021:0421
reference_id RHSA-2021:0421
reference_type
scores
url https://access.redhat.com/errata/RHSA-2021:0421
22
reference_url https://access.redhat.com/errata/RHSA-2021:0521
reference_id RHSA-2021:0521
reference_type
scores
url https://access.redhat.com/errata/RHSA-2021:0521
23
reference_url https://access.redhat.com/errata/RHSA-2021:0548
reference_id RHSA-2021:0548
reference_type
scores
url https://access.redhat.com/errata/RHSA-2021:0548
24
reference_url https://access.redhat.com/errata/RHSA-2021:0551
reference_id RHSA-2021:0551
reference_type
scores
url https://access.redhat.com/errata/RHSA-2021:0551
25
reference_url https://access.redhat.com/errata/RHSA-2021:2041
reference_id RHSA-2021:2041
reference_type
scores
url https://access.redhat.com/errata/RHSA-2021:2041
26
reference_url https://access.redhat.com/errata/RHSA-2021:2438
reference_id RHSA-2021:2438
reference_type
scores
url https://access.redhat.com/errata/RHSA-2021:2438
fixed_packages
0
url pkg:npm/y18n@3.2.2
purl pkg:npm/y18n@3.2.2
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:npm/y18n@3.2.2
1
url pkg:npm/y18n@4.0.1
purl pkg:npm/y18n@4.0.1
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:npm/y18n@4.0.1
2
url pkg:npm/y18n@5.0.5
purl pkg:npm/y18n@5.0.5
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:npm/y18n@5.0.5
aliases CVE-2020-7774, GHSA-c4w7-xm78-47vh
risk_score 4.0
exploitability 0.5
weighted_severity 8.0
resource_url http://public2.vulnerablecode.io/vulnerabilities/VCID-fu8u-pxaa-43be
Risk_scorenull
Resource_urlhttp://public2.vulnerablecode.io/packages/pkg:npm/y18n@3.2.2