How severe is CVE-2026-50630?

CVE-2026-50630 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-2026-50630 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-50630?

CVE-2026-50630 affects Apache Cxf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-50630?

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

Does CVE-2026-50630 have an EU (EUVD) identifier?

Yes. CVE-2026-50630 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36398.

When was CVE-2026-50630 published?

CVE-2026-50630 was published on 2026-06-12 and last updated on 2026-08-07.

CVE-2026-50630

CVE-2026-50630 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-113.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36398
Weakness: CWE-113
Affected product: Apache Cxf
Published: 2026-06-12
Last modified: 2026-08-07

Description

A CRLF injection vulnerability exists in the OAuth2 AuthorizationUtils class. When constructing the WWW-Authenticate response header, the 'realm' parameter is concatenated without sanitizing Carriage Return (CR) and Line Feed (LF) characters. If an attacker can control the realm value, they can inject arbitrary HTTP headers or split the HTTP response entirely. 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-2026-50630?: A CRLF injection vulnerability exists in the OAuth2 AuthorizationUtils class. When constructing the WWW-Authenticate response header, the 'realm' parameter is concatenated without sanitizing Carriage Return (CR) and Line Feed (LF) characters. If an attacker can control the realm value, they can inject arbitrary HTTP headers or split the HTTP response entirely. 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-2026-50630?: CVE-2026-50630 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-2026-50630 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-50630?: CVE-2026-50630 affects Apache Cxf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-50630?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-50630 have an EU (EUVD) identifier?: Yes. CVE-2026-50630 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36398.
When was CVE-2026-50630 published?: CVE-2026-50630 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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