How severe is CVE-2026-50645?

CVE-2026-50645 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-50645 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-50645?

CVE-2026-50645 affects Apache Cxf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-50645?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-50645 have an EU (EUVD) identifier?

Yes. CVE-2026-50645 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36403.

When was CVE-2026-50645 published?

CVE-2026-50645 was published on 2026-06-12 and last updated on 2026-06-17.

CVE-2026-50645

CVE-2026-50645 is a high-severity vulnerability in Apache Cxf with a CVSS 3.x base score of 7.5. 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-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36403
Weakness: CWE-400
Affected product: Apache Cxf
Published: 2026-06-12
Last modified: 2026-06-17

Description

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, which fix this issue by imposing a maximum default of 500 attachments per message.

Frequently asked questions

What is CVE-2026-50645?: 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, which fix this issue by imposing a maximum default of 500 attachments per message.
How severe is CVE-2026-50645?: CVE-2026-50645 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-50645 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-50645?: CVE-2026-50645 affects Apache Cxf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-50645?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-50645 have an EU (EUVD) identifier?: Yes. CVE-2026-50645 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36403.
When was CVE-2026-50645 published?: CVE-2026-50645 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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