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CVE-2026-44618 Apache CVE debrief

CVE-2026-44618 is a vulnerability in Apache CXF's WS-Transfer module due to insecure XML parser configuration, potentially allowing XXE attacks. Users are advised to upgrade to versions 4.2.1, 4.1.6, or 3.6.11 for a fix. This issue arises from an insecure XML parser configuration, which may enable attackers to perform XXE attacks. The vulnerability has a CVSS score of 5.3 and is classified as MEDIUM severity. Affected users should prioritize upgrading to a fixed version.

Vendor
Apache
Product
CXF
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-22
Original CVE updated
2026-07-23
Advisory published
2026-05-22
Advisory updated
2026-07-23

Who should care

Users of Apache CXF's WS-Transfer module, especially those using versions prior to 4.2.1, 4.1.6, or 3.6.11, should be aware of this vulnerability and take steps to upgrade. This includes operators, platform administrators, vulnerability management teams, and security teams who may be impacted by the vulnerability. Upgrading to a fixed version is recommended to prevent potential security issues.

Technical summary

The vulnerability arises from an insecure XML parser configuration in Apache CXF's WS-Transfer module. This configuration may allow attackers to perform XXE (XML External Entity) attacks. The issue has been addressed in versions 4.2.1, 4.1.6, and 3.6.11 of Apache CXF. Users of affected versions should upgrade to a fixed version to prevent potential XXE attacks. No additional technical details are provided at this time.

Defensive priority

Medium priority due to the potential for XXE attacks, which can lead to information disclosure or other security issues. Users should prioritize upgrading to a fixed version and review XML parser configurations for secure settings.

Recommended defensive actions

  • Upgrade to Apache CXF version 4.2.1, 4.1.6, or 3.6.11.
  • Review and adjust XML parser configurations for secure settings.
  • Monitor for any suspicious activity related to XXE attacks.
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

Evidence is based on official CVE and NVD records, as well as vendor advisories from Apache. Limited additional information is available. The vulnerability has been confirmed in Apache CXF's WS-Transfer module, and users are advised to upgrade to fixed versions. No additional details are provided at this time. Further verification is recommended to ensure accurate scope and impact assessment.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-44618 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-44618

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-44618 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-44618

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.