CVE-2020-7774: Prototype Pollution
Vulnerability summary
CVE-2020-7774 is a critical (CVSS 9.8) vulnerability in oracle graalvm. EPSS estimates a 69.59% chance of exploitation in the next 30 days, higher than 99.3% of scored vulnerabilities. 3 public exploits are recorded.
Public exploit (GitHub, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 24 · Related 17Timeline
- 17-11-2020PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
The package y18n before 3.2.2, 4.0.1 and 5.0.5, is vulnerable to Prototype Pollution.
CVSS metrics
7 scores · 6 sources · 2 versions- CVE.orgCNA7.3HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:PDiffers
- OSV · AlpineEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · NpmEcosystem advisory · calculated7.3HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:LDiffers
EPSS trend
Probability
69.59%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
Increase +0.21 pp
From 69.38% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
3 foundY18N
Maturity: poc
Exploit Reference (snyk.io)
Maturity: unknown
Exploit Reference (snyk.io)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Alpine1 product
- nodejs< 10.24.1-r0 | < 12.22.1-r0 | < 14.16.1-r0
Debian1 product
- node-y18n< 4.0.0-3
Npm1 product
- y18n< 3.2.2 | ≥ 4.0.0, < 4.0.1 | ≥ 5.0.0, < 5.0.5
Oracle1 product
- graalvmEOL19.3.5 | 20.3.1.2 | 21.0.0.2
Siemens1 product
Ubuntu1 product
- node-y18nAll versions (No fix recorded)
Y18n_project1 product
- y18n< 3.2.2 | ≥ 5.0.0, < 5.0.5 | 4.0.0
7 vendors · 7 products
