November 13, 2026

CVE Watchtower

CVE-2026-73179Apache Cxf

NVDCVSS scored by 134c704f-9b21-4f2e-91b3-4a467353bcc0

Vulnerability Summary

Improper enforcement of single-use authorization code semantics in the JPA OAuth2 authorization code grant provider in Apache CXFallows a remote attacker to obtain multiple valid access tokens from a single authorization code via concurrent token exchange requests that race the non-atomic find-then-delete operation against a shared relational database under READ_COMMITTED isolation. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fixes this issue.
Severity Level
HIGH(8.1)
Published Date
Oct 9, 2026
Last Modified
Oct 20, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.40%Probability
Root Weakness (CWE)
CWE-367 β†—
See the MITRE CWE entry for the full definition of this weakness.
CVSS v3.1 Base Metrics — Score 8.1 (HIGH)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Apache Cxf < 3.6.13
  • Apache Cxf >= 4.0.0 and < 4.1.9
  • Apache Cxf >= 4.2.0 and < 4.2.4
Patched Versions
  • Apache Cxf 3.6.13
  • Apache Cxf 4.1.9
  • Apache Cxf 4.2.4

What to do

Plan remediation soon. No exploitation is confirmed yet, but the severity is high.

  1. Check whether you run Apache Cxf and which version.
  2. Update to a patched version listed above, then confirm the new version.

Timeline

  • Oct 9, 2026Published
  • Oct 20, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 13, 2026 21:28 UTC