Apache CXF has Improper Restriction of XML External Entity Reference
The advisory, in context
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.
Affected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
From 4.2.0 before 4.2.2
Fixed in 4.2.2
2 explicitly affected versions
4.2.0, 4.2.1
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "4.2.0"
},
{
"fixed": "4.2.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.2.0",
"4.2.1"
]
}From 4.0.0 before 4.1.7
Fixed in 4.1.7
19 explicitly affected versions
4.0.0, 4.0.1, 4.0.10, 4.0.11, 4.0.2, 4.0.3, 4.0.4, 4.0.5, 4.0.6, 4.0.7, 4.0.8, 4.0.9, 4.1.0, 4.1.1, 4.1.2, 4.1.3, 4.1.4, 4.1.5, 4.1.6
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.1.7"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.0.0",
"4.0.1",
"4.0.10",
"4.0.11",
"4.0.2",
"4.0.3",
"4.0.4",
"4.0.5",
"4.0.6",
"4.0.7",
"4.0.8",
"4.0.9",
"4.1.0",
"4.1.1",
"4.1.2",
"4.1.3",
"4.1.4",
"4.1.5",
"4.1.6"
]
}Earlier releases before 3.6.12
Fixed in 3.6.12
102 explicitly affected versions
3.0.0, 3.0.0-milestone1, 3.0.0-milestone2, 3.0.1, 3.0.10, 3.0.11, 3.0.12, 3.0.13, 3.0.14, 3.0.15, 3.0.16, 3.0.2, 3.0.3, 3.0.4, 3.0.5, 3.0.6, 3.0.7, 3.0.8, 3.0.9, 3.1.0, 3.1.1, 3.1.10, 3.1.11, 3.1.12, 3.1.13, 3.1.14, 3.1.15, 3.1.16, 3.1.17, 3.1.18, 3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.1.6, 3.1.7, 3.1.8, 3.1.9, 3.2.0, 3.2.1, 3.2.10, 3.2.11, 3.2.12, 3.2.13, 3.2.14, 3.2.2, 3.2.3, 3.2.4, 3.2.5, 3.2.6, 3.2.7, 3.2.8, 3.2.9, 3.3.0, 3.3.1, 3.3.10, 3.3.11, 3.3.12, 3.3.13, 3.3.2, 3.3.3, 3.3.4, 3.3.5, 3.3.6, 3.3.7, 3.3.8, 3.3.9, 3.4.0, 3.4.1, 3.4.10, 3.4.2, 3.4.3, 3.4.4, 3.4.5, 3.4.6, 3.4.7, 3.4.8, 3.4.9, 3.5.0, 3.5.1, 3.5.10, 3.5.11, 3.5.2, 3.5.3, 3.5.4, 3.5.5, 3.5.6, 3.5.7, 3.5.8, 3.5.9, 3.6.0, 3.6.1, 3.6.10, 3.6.11, 3.6.2, 3.6.3, 3.6.4, 3.6.5, 3.6.6, 3.6.7, 3.6.8, 3.6.9
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6.12"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.0.0",
"3.0.0-milestone1",
"3.0.0-milestone2",
"3.0.1",
"3.0.10",
"3.0.11",
"3.0.12",
"3.0.13",
"3.0.14",
"3.0.15",
"3.0.16",
"3.0.2",
"3.0.3",
"3.0.4",
"3.0.5",
"3.0.6",
"3.0.7",
"3.0.8",
"3.0.9",
"3.1.0",
"3.1.1",
"3.1.10",
"3.1.11",
"3.1.12",
"3.1.13",
"3.1.14",
"3.1.15",
"3.1.16",
"3.1.17",
"3.1.18",
"3.1.2",
"3.1.3",
"3.1.4",
"3.1.5",
"3.1.6",
"3.1.7",
"3.1.8",
"3.1.9",
"3.2.0",
"3.2.1",
"3.2.10",
"3.2.11",
"3.2.12",
"3.2.13",
"3.2.14",
"3.2.2",
"3.2.3",
"3.2.4",
"3.2.5",
"3.2.6",
"3.2.7",
"3.2.8",
"3.2.9",
"3.3.0",
"3.3.1",
"3.3.10",
"3.3.11",
"3.3.12",
"3.3.13",
"3.3.2",
"3.3.3",
"3.3.4",
"3.3.5",
"3.3.6",
"3.3.7",
"3.3.8",
"3.3.9",
"3.4.0",
"3.4.1",
"3.4.10",
"3.4.2",
"3.4.3",
"3.4.4",
"3.4.5",
"3.4.6",
"3.4.7",
"3.4.8",
"3.4.9",
"3.5.0",
"3.5.1",
"3.5.10",
"3.5.11",
"3.5.2",
"3.5.3",
"3.5.4",
"3.5.5",
"3.5.6",
"3.5.7",
"3.5.8",
"3.5.9",
"3.6.0",
"3.6.1",
"3.6.10",
"3.6.11",
"3.6.2",
"3.6.3",
"3.6.4",
"3.6.5",
"3.6.6",
"3.6.7",
"3.6.8",
"3.6.9"
]
}References
- https://nvd.nist.gov/vuln/detail/CVE-2026-49875
- 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://cxf.apache.org/security-advisories.data/CVE-2026-49875.txt
- https://github.com/apache/cxf
- https://lists.apache.org/thread/3kb9w5bg90xcp06fccoz9k3gpsvyy79o
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49875.json
- http://www.openwall.com/lists/oss-security/2026/06/11/2