Medium

Bun has an Application-level Prototype Pollution vulnerability in the runtime native API for Glo

  • Disclosed: 18.12.2024
  • Updated: 11.10.2026 10:22

Versions of the package bun before 1.1.30 are vulnerable to Prototype Pollution due to improper input sanitization. An attacker can exploit this vulnerability through Bun's APIs that accept objects.

Affected software

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PlatformPackageVulnerable versionsFixed in
npm package bun < 1.1.30 1.1.30

References

CVSS score 7.5/10
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-1321
Platform
npm
Package
bun
Disclosed
18.12.2024
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-v9mx-4pqq-h232 - CC BY 4.0

Vulnerability history: bun

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
2
First → latest
12.2024 07.2025
Without a fix
1
Exploited in attacks
0

Severity breakdown

  • High 1
  • Medium 1

Disclosures per year

  1. 2024: 1
  2. 2025: 1
  3. 2026: 0
  1. High · 8.8 CVE-2025-8022 <= 1.1.39 no fix
  2. Bun has an Application-level Prototype Pollution vulnerability in the runtime native API for Glo this entry
    Medium · 7.5 CVE-2024-21548 < 1.1.30 1.1.30

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