How severe is CVE-2026-50634?

CVE-2026-50634 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-50634 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-50634?

CVE-2026-50634 affects Apache Cxf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-50634?

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

Does CVE-2026-50634 have an EU (EUVD) identifier?

Yes. CVE-2026-50634 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36402.

When was CVE-2026-50634 published?

CVE-2026-50634 was published on 2026-06-12 and last updated on 2026-06-17.

CVE-2026-50634

CVE-2026-50634 is a medium-severity vulnerability in Apache Cxf with a CVSS 3.x base score of 6.5. 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-347.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36402
Weakness: CWE-347
Affected product: Apache Cxf
Published: 2026-06-12
Last modified: 2026-06-17

Description

A vulnerability in Apache CXF's JwsJsonContainerRequestFilter can be exploited to cause CXF to process metadata that was not authenticated by the accepted signature. This can bypass the application's assumption that accepted `Content-Type` or protected HTTP-header metadata came from a verified signature entry, and may steer downstream JAX-RS entity parsing or signed-header consistency checks. Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fix this issue.

Frequently asked questions

What is CVE-2026-50634?: A vulnerability in Apache CXF's JwsJsonContainerRequestFilter can be exploited to cause CXF to process metadata that was not authenticated by the accepted signature. This can bypass the application's assumption that accepted `Content-Type` or protected HTTP-header metadata came from a verified signature entry, and may steer downstream JAX-RS entity parsing or signed-header consistency checks. Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fix this issue.
How severe is CVE-2026-50634?: CVE-2026-50634 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-50634 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-50634?: CVE-2026-50634 affects Apache Cxf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-50634?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-50634 have an EU (EUVD) identifier?: Yes. CVE-2026-50634 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36402.
When was CVE-2026-50634 published?: CVE-2026-50634 was published on 2026-06-12 and last updated on 2026-06-17.

References

Affected products (1)

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

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