EUVD-2026-53853
GHSA-3p6r-x275-5x98
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-reachable endpoint, no authentication required for public services, single crafted request triggers exhaustion; impact is availability-only with no confidentiality or integrity effect.
Primary rating from Vendor (apache).
CVSS VectorVendor: apache
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Denial of service persists in Apache CXF due to an incomplete remediation of CVE-2026-50645, allowing unauthenticated network attackers to exhaust server resources by submitting messages containing an excessive number of MIME attachment headers. All Apache CXF deployments running versions prior to 4.2.3, 4.1.8, or 3.6.12 remain vulnerable despite having applied the prior patch. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The target must be running Apache CXF in any version prior to 4.2.3, 4.1.8, or 3.6.12, including versions that applied the patch for CVE-2026-50645. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | No CVSS vector or score has been published for this CVE at time of analysis, so all metric assessments below are independently derived. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Apache CXF to version 4.2.3, 4.1.8, or 3.6.12 depending on the active branch, as confirmed by the Apache advisory at https://lists.apache.org/thread/trsnkxc2f21585zlt819blvchgl6oykb. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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