CVE-2026-50645 json
Apache CXF: No restriction on attachment headers per message
published 2026-06-12 4 mo ago modified 2026-11-05 3 d ago also GHSA-ghvc-7hp8-2g2v , EUVD-2026-36403
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 40%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- maven org.apache.cxf:cxf-core 3.6.12, 4.1.7, 4.2.2
- Apache Software Foundation Apache CXF 3.6.12, 4.1.7, 4.2.2
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.apache.cxf:cxf-core | >=4.2.0, <4.2.2 >=4.0.0, <4.1.7 <3.6.12 |
4.2.2 4.1.7 3.6.12 |
Affected products
- Apache Software Foundation Apache CXF
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
References
-
lists.apache.org
/thread/24zb7cqcvykhwm0j797dmdq25s61mj93
vendor-advisory, web
-
openwall.com
/lists/oss-security/2026/06/11/12
web, mailing-list, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-50645
advisory
-
cxf.apache.org
/security-advisories.data/CVE-2026-50645.txt
web
-
github.com
/apache/cxf
package
Sources
- CVE List CVE-2026-50645
- GitHub Advisory GHSA-ghvc-7hp8-2g2v
- NVD CVE-2026-50645
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