CVE-2026-50645
published 2026-08-06CVE-2026-50645: An incomplete fix for CVE-2026-50645 means that it is still possible to perform a denial of service attack on Apache CXF by sending a message with many…
PriorityP338high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.46%
39.5th percentile
An incomplete fix for CVE-2026-50645 means that it is still possible to perform a denial of service attack on Apache CXF by sending a message with many attachment headers. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apache | cxf | < 3.6.12 | 3.6.12 |
| apache | cxf | < 4.1.7 | 4.1.7 |
| apache | cxf | — | — |
| apache | cxf | >= 4.0.0 < 4.1.8 | 4.1.8 |
| apache | cxf | >= 4.2.0 < 4.2.3 | 4.2.3 |
| apache | cxf | >= 4.2.0 < 4.2.2 | 4.2.2 |
| apache_software_foundation | apache_cxf | < 3.6.12 | 3.6.12 |
| apache_software_foundation | apache_cxf | >= 4.0.0 < 4.1.8 | 4.1.8 |
| apache_software_foundation | apache_cxf | >= 4.2.0 < 4.2.3 | 4.2.3 |
| jboss-eap-7 | eap74-els-openjdk11-openshift-rhel8 | — | — |
| jboss-eap-7 | eap74-els-openjdk17-openshift-rhel8 | — | — |
| jboss-eap-7 | eap74-els-openjdk8-openshift-rhel8 | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_redhat7.5HIGH
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Red Hat
org.apache.cxf/cxf: Apache CXF: Denial of service via many attachment headers
vendor_redhat·2026-08-06·CVSS 7.5
CVE-2026-64958 [HIGH] CWE-770 org.apache.cxf/cxf: Apache CXF: Denial of service via many attachment headers
org.apache.cxf/cxf: Apache CXF: Denial of service via many attachment headers
An incomplete fix for CVE-2026-50645 means that it is still possible to perform a denial of service attack on Apache CXF by sending a message with many attachment headers. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.
A flaw was found in Apache CXF. This vulnerability allows a remote attacker to perform a denial of service (DoS) attack by sending a message with an excessive number of attachment headers. This can lead to the affected system becoming unresponsive or unavailable.
Package: cxf-core (Red Hat build of Apache Camel 4 for Quarkus 3) - Under investigation
Package: cxf-integration-tracing-opentelemetry (Red Hat build of Apache Camel 4 for Quarkus 3) - Unde
GHSA
An incomplete fix for CVE-2026-50645 means that it is still possible to perform a denial of service attack on Apache CXF by sending a message with many attachment headers.
ghsa_unreviewed·2026-08-06·CVSS 7.5
CVE-2026-64958 [HIGH] CWE-400 An incomplete fix for CVE-2026-50645 means that it is still possible to perform a denial of service attack on Apache CXF by sending a message with many attachment headers.
An incomplete fix for CVE-2026-50645 means that it is still possible to perform a denial of service attack on Apache CXF by sending a message with many attachment headers. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.
GHSA
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
ghsa_unreviewed·2026-06-12
CVE-2026-50645 [HIGH] CWE-400 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
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, which fix this issue by imposing a maximum default of 500 attachments per message.
GHSA
Apache cxf-core: No restriction on attachment headers per message
ghsa·2026-06-12
CVE-2026-50645 [HIGH] CWE-400 Apache cxf-core: No restriction on attachment headers per message
Apache cxf-core: No restriction on attachment headers per message
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, which fix this issue by imposing a maximum default of 500 attachments per message.
VulDB
Apache CXF up to 4.1.6/4.2.1 Attachment Header access control
vuldb·2026-06-11
CVE-2026-50645 [CRITICAL] Apache CXF up to 4.1.6/4.2.1 Attachment Header access control
A vulnerability was found in Apache CXF up to 4.1.6/4.2.1. It has been classified as critical. This issue affects some unknown processing of the component Attachment Header Handler. Performing a manipulation results in improper access controls.
This vulnerability was named CVE-2026-50645. The attack may be initiated remotely. There is no available exploit.
Upgrading the affected component is recommended.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-08-06
Published