CVE-2026-50629 json
Apache CXF: OAuth2: Log Injection via Unsanitized Client Identifier
published 2026-06-12 4 mo ago modified 2026-11-05 3 d ago also GHSA-f8p7-h97q-7vx7 , EUVD-2026-36397
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 38%
- public exploits
- 0
- none known
Summary
The 'clientId' parameter from incoming HTTP requests is directly concatenated into OAuth2 server log warning messages without sanitizing control characters. This allows an attacker to inject arbitrary content, including fake log entries, into the server's log files. Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fixes this issue.
Patch / fix
- maven org.apache.cxf:cxf-rt-rs-security-oauth2 4.1.7, 4.2.2
- Apache Software Foundation Apache CXF 3.6.12, 4.1.7, 4.2.2
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-50629 updated cvss 5.3
org.apache.cxf/cxf-rt-rs-security-oauth2: apache-cxf: Log injection in OAuth2 server logs
-
Red Hat build of Apache Camel for Spring Boot 4 cxf-rt-rs-security-oauth2 Red Hat Fuse 7 cxf-rt-rs-security-oauth2 Red Hat JBoss Enterprise Application Platform Expansion Pack cxf-rt-rs-security-oauth2 Red Hat JBoss Web Server 5 cxf-rt-rs-security-oauth2not affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| GitHub | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.apache.cxf:cxf-rt-rs-security-oauth2 | >=4.2.0, <4.2.2 <4.1.7 |
4.2.2 4.1.7 |
Affected products
- Apache Software Foundation Apache CXF
Classification
- Weakness
-
- CWE-93 Improper Neutralization of CRLF Sequences
References
-
lists.apache.org
/thread/xw95po30p8th58ms1no6b0f2375cql00
vendor-advisory, web
-
openwall.com
/lists/oss-security/2026/06/11/6
web, mailing-list, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-50629
advisory
-
github.com
/apache/cxf
package
Sources
- CVE List CVE-2026-50629
- GitHub Advisory GHSA-f8p7-h97q-7vx7
- NVD CVE-2026-50629
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