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CVE-2026-61741

9.3 CRITICALpublic exploit available

Published 2026-09-24 · Updated 2026-09-29

AI risk analysis

Summary
The flaw allows an attacker to exploit XML External Entity (XXE) attacks, leading to file disclosure, SSRF, and denial of service.
Exploitability
Exploitation is moderately hard as it requires crafting a specific XML request, but preconditions include the application processing untrusted XML input.
Blast radius
If exploited, the vulnerability could lead to significant data exposure and internal network compromise.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Upgrade to http4s-scala-xml version 0.24.1 or later.
xxexmldisclosuressrfdenial-of-service

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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.

CVSS vector

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

Weaknesses

CWE-611

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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