CVE-2026-50645

Apache CXF: No restriction on attachment headers per message

Published Jun 12, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-ghvc-7hp8-2g2v Apache cxf-core: No restriction on attachment headers per message
History
Type Values Removed Values Added
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, which fix this issue by imposing a maximum default of 500 attachments 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 or 3.6.12, which fix this issue by imposing a maximum default of 500 attachments per message.
Type Values Removed Values Added
CPEs cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Apache
Apache cxf
Vendors & Products Apache
Apache cxf
Type Values Removed Values Added
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, which fix this issue by imposing a maximum default of 500 attachments per message.
Title Apache CXF: No restriction on attachment headers per message
Weaknesses CWE-400
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Aug 7, 2026, 12:43 PM
Reserved
Jun 5, 2026, 2:05 PM
Status
Analyzed
Published
Jun 12, 2026, 10:16 AM
Modified
Nov 5, 2026, 3:57 PM