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Vulnerabilities / CVE-2026-61741

critical

CVE-2026-61741

http4s-scala-xml has an XML External Entity (XXE) processing issue

Published Modified CWE 611
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

GHSA9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L

Trivy's own label is CRITICAL. Rated critical by GHSA.

Description

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.

Affected packages and fixed versions

SourcePackageFixed in
maven::GitHub Security Advisory Mavenorg.http4s:http4s-scala-xml_2.12, org.http4s:http4s-scala-xml_2.13, org.http4s:http4s-scala-xml_30.24.1 and 1 more
Show all 3 entries from 1 source
SourcePackageFixed in
maven::GitHub Security Advisory Mavenorg.http4s:http4s-scala-xml_2.120.24.1
maven::GitHub Security Advisory Mavenorg.http4s:http4s-scala-xml_2.130.24.1, 1.0.0-M39
maven::GitHub Security Advisory Mavenorg.http4s:http4s-scala-xml_30.24.1, 1.0.0-M39

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.