CVE-2026-49875
Apache CXF's EndpointReferenceUtils and W3CMultiSchemaFactory classes construct a SAXParserFactory without the necessary JAXP hardening configurations, enabling out-of-band (OOB) external entity resolution.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Apache CXF's EndpointReferenceUtils and W3CMultiSchemaFactory classes construct a SAXParserFactory without the necessary JAXP hardening configurations, enabling out-of-band (OOB) external entity resolution. Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fix this issue.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.53% probability · 43th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-611
- Affected
- apache/cxf
- Source
- security@apache.org
References
- https://lists.apache.org/thread/3kb9w5bg90xcp06fccoz9k3gpsvyy79oVendor Advisory
- http://www.openwall.com/lists/oss-security/2026/06/11/2Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2026:36839
- https://access.redhat.com/errata/RHSA-2026:37390
- https://access.redhat.com/security/cve/CVE-2026-49875
- https://bugzilla.redhat.com/show_bug.cgi?id=2488309
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49875.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.