5.3

CVE-2026-50629: apache software foundation apache cxf CRLF Injection

CVSS: 5.3v3.1MediumModified
AliasesGHSA-f8p7-h97q-7vx7
Published 12-06-2026Last modified 07-08-2026
Open JSON

Vulnerability summary

CVE-2026-50629 is a medium (CVSS 5.3) CRLF Injection vulnerability in apache software foundation apache cxf. EPSS estimates a 0.70% chance of exploitation in the next 30 days, higher than 52.4% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.70%
0%100%
Low · +0.28 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 12-06-2026
    PublishedVulnerability first disclosed.
  2. 07-08-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.70%

Chance of exploitation in the next 30 days

Percentile

52%

Versus all other CVEs

30-day change

+0.28 pp

From 0.42% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.70%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apache1 product
  • cxf< 4.1.7 | ≥ 4.2.0, < 4.2.2
Apache software foundation1 product
  • apache cxf≥ 4.2.0, < 4.2.2 | ≥ 4.0.0, < 4.1.7 | < 3.6.12
Org.apache.cxf1 product
  • cxf-rt-rs-security-oauth2≥ 4.2.0, < 4.2.2 | < 4.1.7

3 vendors · 3 products

References

4 links