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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-41650

26
FAUCET Score

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.

First published: May 7, 2026Last modified: May 7, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 5.7.0CPE matchmatch criteria
cpe:2.3:a:naturalintelligence:fast-xml-parser:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
15.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 15th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

npmpatch availablevia ghsa
Product: fast-xml-parserFixed in: 5.7.0
github_advisoryworkaround availablevia nvd_reference
View patch

Vendor Advisories (1)

npmGHSA-gh4j-gqv2-49f6medium

fast-xml-parser XMLBuilder: XML Comment and CDATA Injection via Unescaped Delimiters

Apr 22, 2026

References

github.com / NaturalIntelligence/fast-xml-parser/releases/tag/v5.6.0
ProductRelease Notes
github.com / NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-gh4j-gqv2-49f6
ExploitMitigationVendor Advisory