CVE-2026-61741 (GCVE-0-2026-61741)

Vulnerability from cvelistv5 – Published: 2026-09-24 17:48 – Updated: 2026-09-29 03:02
VLAI
Title
http4s-scala-xml has an XML External Entity (XXE) processing issue
Summary
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.
Severity
9.3 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 03:01 UTC
CWE
  • CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7858 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
http4s http4s-scala-xml Affected: < 0.24.1
Affected: >= 1.0.0-M1, < 1.0.0-M39
guessed Create a notification for this product.
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