What is CVE-2026-68079?

CVE-2026-68079 is a critical-severity vulnerability in Apache Cxf, classified under Authentication Bypass by Capture-replay. CVSS score: 9.8/10. Published 2026-08-06.

How severe is CVE-2026-68079?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Apache Cxf

CVE-2026-68079

In Apache CXF's DefaultEncryptingCodeDataProvider, a captured authorization code can be redeemed an unlimited number of times due to a flaw in the implementation of the removeCodeGrant functionality. This violates the RFC requirement that "The authorization code MUST NOT be used more than once." Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.

Published 2026-08-06 · last modified 2026-10-24.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (52.5th percentile), scored 2026-11-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Apache Cxf
Apache Software Foundation Cxf — versions 4.2.0, 4.0.0, 0

Weakness classification (CWE)

CWE-294 — Authentication Bypass by Capture-replay

References

lists.apache.org/thread/6m06gdqz4rxhy9g90qz9lyqx2gqmf13o (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-68079?: CVE-2026-68079 is a critical-severity vulnerability in Apache Cxf, classified under Authentication Bypass by Capture-replay. CVSS score: 9.8/10. Published 2026-08-06.
How severe is CVE-2026-68079?: Critical severity. CVSS v3 base score is 9.8 out of 10.