How severe is CVE-2026-50629?

CVE-2026-50629 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-50629 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-50629?

CVE-2026-50629 affects Apache Cxf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-50629?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-50629 have an EU (EUVD) identifier?

Yes. CVE-2026-50629 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36397.

When was CVE-2026-50629 published?

CVE-2026-50629 was published on 2026-06-12 and last updated on 2026-08-07.

CVE-2026-50629

CVE-2026-50629 is a medium-severity vulnerability in Apache Cxf with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-93.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36397
Weakness: CWE-93
Affected product: Apache Cxf
Published: 2026-06-12
Last modified: 2026-08-07

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.

Frequently asked questions

What is CVE-2026-50629?: 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.
How severe is CVE-2026-50629?: CVE-2026-50629 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-50629 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-50629?: CVE-2026-50629 affects Apache Cxf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-50629?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-50629 have an EU (EUVD) identifier?: Yes. CVE-2026-50629 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36397.
When was CVE-2026-50629 published?: CVE-2026-50629 was published on 2026-06-12 and last updated on 2026-08-07.

References

Affected products (1)

cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*

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