Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Apache Ivy versions before 2.5.2 are affected. When Ivy parses XML files, including its own configuration, Ivy files, or Maven POMs, it downloads external document type definitions and expands entity references in them, which is an XML external entity issue. An attacker who can supply such an XML file to Ivy could use this to exfiltrate data, reach resources the machine running Ivy can access, or disrupt Ivy's execution. Upgrade to Ivy 2.5.2 or later. Users unable to upgrade can restrict external DTD processing using Java system properties described in Oracle's JAXP Security Guide.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.2 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS 0.020, the 80th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:18 UTC First seen by agentprime
- 31 Oct 2026, 14:18 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-2jc4-r94c-rp7h
- OSV: GHSA-2jc4-r94c-rp7h
- nvd.nist.gov/vuln/detail/CVE-2022-46751
- github.com/apache/ant-ivy/commit/2be17bc18b0e1d4123007d579e43ba1a4b6fab3d
- docs.oracle.com/en/java/javase/13/security/java-api-xml-processing-jaxp-security-guide.html#GUID-94ABC0EE-9DC8-44F0-84AD-47ADD5340477
- gitbox.apache.org/repos/asf?p=ant-ivy.git;a=commit;h=2be17bc18b0e1d4123007d579e43ba1a4b6fab3d
- github.com/apache/ant-ivy
- lists.apache.org/thread/1dj60hg5nr36kjr4p1100dwjrqookps8
- lists.apache.org/thread/9gcz4xrsn8c7o9gb377xfzvkb8jltffr
- www.openwall.com/lists/oss-security/2023/09/06/9