How severe is CVE-2026-41650?

CVE-2026-41650 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-41650 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-41650?

CVE-2026-41650 affects Naturalintelligence Fast-xml-parser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-41650?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-41650 have an EU (EUVD) identifier?

Yes. CVE-2026-41650 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28381.

When was CVE-2026-41650 published?

CVE-2026-41650 was published on 2026-05-07 and last updated on 2026-06-17.

CVE-2026-41650

CVE-2026-41650 is a medium-severity vulnerability in Naturalintelligence Fast-xml-parser with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-91.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-28381
Weakness: CWE-91
Affected product: Naturalintelligence Fast-xml-parser
Published: 2026-05-07
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-41650?: 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.
How severe is CVE-2026-41650?: CVE-2026-41650 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-41650 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-41650?: CVE-2026-41650 affects Naturalintelligence Fast-xml-parser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-41650?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-41650 have an EU (EUVD) identifier?: Yes. CVE-2026-41650 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28381.
When was CVE-2026-41650 published?: CVE-2026-41650 was published on 2026-05-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:naturalintelligence:fast-xml-parser:*:*:*:*:*:*:*:*

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