CVE-2023-26920
MEDIUM6.5EPSS 0.20%fast-xml-parser vulnerable to Prototype Pollution through tag or attribute name
Published: 6/13/2023Modified: 4/28/2026
Description
fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution.
Affected packages (2)
- Debian/node-webfontfrom 0
- npm/fast-xml-parserfrom 0, < 4.1.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
References (7)
- ADVISORYhttps://github.com/advisories/GHSA-793h-6f7r-6qvm
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2023-26920
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2023-26920
- PATCHhttps://github.com/NaturalIntelligence/fast-xml-parser
- WEBhttps://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7
- WEBhttps://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804
- WEBhttps://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-x3cc-x39p-42qx