CVE-2026-26021
- Source
- https://cve.org/CVERecord?id=CVE-2026-26021
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-26021.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-26021
- Aliases
- Published
- 2026-02-11T21:18:50.084Z
- Modified
- 2026-03-03T02:56:04.510162Z
- Severity
-
- 9.4 (Critical) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H CVSS Calculator
- Summary
- Prototype pollution in set-in
- Details
-
set-in provides the set value of nested associative structure given array of keys. A prototype pollution vulnerability exists in the the npm package set-in (>=2.0.1, < 2.0.5). Despite a previous fix that attempted to mitigate prototype pollution by checking whether user input contained a forbidden key, it is still possible to pollute Object.prototype via a crafted input using Array.prototype. This has been fixed in version 2.0.5.
- Database specific
{ "cwe_ids": [ "CWE-1321" ], "cna_assigner": "GitHub_M", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26021.json" }- References