Medium severity6.1NVD Advisory· Published May 7, 2026· Updated May 12, 2026
CVE-2026-41650
CVE-2026-41650
Description
fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. Prior to version 5.7.0, XMLBuilder does not escape the "-->" sequence in comment content or the "]]>" sequence in CDATA sections when building XML from JavaScript objects. This allows XML injection when user-controlled data flows into comments or CDATA elements, leading to XSS, SOAP injection, or data manipulation. This issue has been patched in version 5.7.0.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
fast-xml-parsernpm | < 5.7.0 | 5.7.0 |
Affected products
2<=5.5.12+ 1 more
- (no CPE)range: <=5.5.12
- cpe:2.3:a:naturalintelligence:fast-xml-parser:*:*:*:*:*:*:*:*range: <5.7.0
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
4- github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-gh4j-gqv2-49f6nvdExploitMitigationVendor AdvisoryWEB
- github.com/advisories/GHSA-gh4j-gqv2-49f6ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-41650ghsaADVISORY
- github.com/NaturalIntelligence/fast-xml-parser/releases/tag/v5.6.0nvdProductRelease NotesWEB
News mentions
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