Vulnerability · Published Jun 12, 2026 · Assigned by apache
CVE-2026-50645Apache CXF: No restriction on attachment headers per message
High 7.5
In plain English
A high-severity uncontrolled resource consumption in Apache CXF from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
There is no restriction on the amount of attachment headers that a message can contain when being deserialized by Apache CXF, which can lead to uncontrolled resource consumption or a denial of service attack. Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fix this issue by imposing a maximum default of 500 attachments per message.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.apache.cxf:cxf-core | 4.2.2 | GHSA-ghvc-7hp8-2g2v |
| Maven | org.apache.cxf:cxf-core | 4.1.7 | GHSA-ghvc-7hp8-2g2v |
| Maven | org.apache.cxf:cxf-core | 3.6.12 | GHSA-ghvc-7hp8-2g2v |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache CXF | 4.2.0 – before 4.2.24.0.0 – before 4.1.70 – before 3.6.12 |
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H