CVE-2026-61741

http4s-scala-xml provides `EntityDecoder[F, scala.xml.Elem]` instances that parse XML message bodies. Prior to versions 0.24.1 and 1.0.0-M39, these decoders used a `javax.xml.parsers.SAXParserFactory` obtained from `SAXParserFactory.newInstance` without any security configuration. With the JDK's default settings, the parser resolves DOCTYPE declarations, external general and parameter entities, and external DTDs.An application that uses these decoders to parse untrusted XML is vulnerable to XML External Entity (XXE) attacks. An attacker can craft a request that discloses local files readable by the service process, performs server-side request forgery (SSRF) against internal network resources, and/or causes denial of service through entity expansion. Versions 0.24.1 and 1.0.0-M39 fix the issue.

CVSS v3 9.3 CRITICAL

9.3^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 4.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://github.com/http4s/http4s-scala-xml/security/advisories/GHSA-cjx3-73hr-rpw7

Configurations

No configuration.

History

24 Sep 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-24 18:17

Updated : 2026-09-30 19:57

NVD link : CVE-2026-61741

Mitre link : CVE-2026-61741

CVE.ORG link : CVE-2026-61741

JSON object : View

Products Affected

No product.

CWE

CWE-611

Improper Restriction of XML External Entity Reference

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