fast-xml-parser vulnerable to Prototype Pollution through tag or attribute name

Description

As a part of this vulnerability, user was able to se code using __proto__ as a tag or attribute name.

Recommendation

Update the fast-xml-parser package to the latest compatible version. Followings are version details:

• Affected version(s): < 4.1.2
• Patched version(s): 4.1.2

References

• GHSA-x3cc-x39p-42qx
• CVE-2023-26920
• CWE-1321
• CAPEC-310
• OWASP 2021-A6

Related Issues

• fast-xml-parser vulnerable to Regex Injection via Doctype Entities - CVE-2023-34104
• Parse Server vulnerable to remote code execution via MongoDB BSON parser through prototype pollution - CVE-2023-36475
• fast-xml-parser vulnerable to ReDOS at currency parsing - CVE-2024-41818
• fast-xml-parser affected by DoS through entity expansion in DOCTYPE (no expansion limit) - CVE-2026-26278

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Tags:

npm

fast-xml-parser