CVE-2026-41650

Q: How do I fix CVE-2026-41650?

Upgrade fast-xml-parser to 5.7.0 or later.

Q: Is CVE-2026-41650 being actively exploited?

Not that we know of. CVE-2026-41650 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.24% is the estimated probability that it will be exploited in the next 30 days. That is higher than 15% of all scored CVEs.

Q: How severe is CVE-2026-41650?

CVE-2026-41650 has a CVSS v3 base score of 6.1, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-41650 affect?

Published advisories record a fix for fast-xml-parser (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

MEDIUM

6.1

CVSS v3

NVD

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.

CWE-91

How to fix

Remediation Available

fast-xml-parserNVD

Affected:< 5.7.0Fixed in:5.7.0CVE-2026-41650derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.24%probability of exploitation in 30 days

15thpercentile

Low risk: more likely to be exploited than 15% of all known CVEs.

References

Exploit1

github.com

Release Notes1

github.com

Related Vulnerabilities

Other CWE-91 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-0646	Critical	9.8	99%	KEV	-
CVE-2023-27253	High	8.8	90%	-	-
CVE-2023-46214	High	8.0	89%	-	Fix
CVE-2024-53675	High	7.3	81%	-	Fix
CVE-2023-43187	Critical	9.8	47%	-	Fix
CVE-2024-53674	High	7.3	47%	-	Fix

Common questions

How do I fix CVE-2026-41650?

Upgrade fast-xml-parser to 5.7.0 or later.

Is CVE-2026-41650 being actively exploited?

Not that we know of. CVE-2026-41650 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.24% is the estimated probability that it will be exploited in the next 30 days. That is higher than 15% of all scored CVEs.

How severe is CVE-2026-41650?

CVE-2026-41650 has a CVSS v3 base score of 6.1, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-41650 affect?

Published advisories record a fix for fast-xml-parser (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-26.