Vulnerability-Lookup

CVE-2026-50630 (GCVE-0-2026-50630)

Vulnerability from cvelistv5 – Published: 2026-06-12 08:58 – Updated: 2026-08-07 12:43

Title

Apache CXF: OAuth2: HTTP Response Splitting via WWW-Authenticate Realm Injection

Summary

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.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-12 14:03 UTC

CWE

CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')

Assigner

apache CNA under the mitre root

CNA scorecard B 76/100 over 1085 records in the last 180 days details

References

2 references

URL	Tags
https://lists.apache.org/thread/bt7vnjzzkpd6vdhkx…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/06/11/7

Impacted products

1 product

Vendor	Product	Version	CPE status
Apache Software Foundation	Apache CXF	Affected: 4.2.0 , < 4.2.2 (semver) Affected: 4.0.0 , < 4.1.7 (semver) Affected: 0 , < 3.6.12 (semver)	guessed

Credits

Guanping Zhang reported this vulnerability.

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-50630

Vulnerability from fkie_nvd - Published: 2026-06-12 10:16 - Updated: 2026-10-26 11:10

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Summary

References

	URL	Tags
	security@apache.org	https://lists.apache.org/thread/bt7vnjzzkpd6vdhkxv103poor1jy5trm	Vendor Advisory
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/06/11/7	Mailing List, Third Party Advisory

Impacted products

	Vendor	Product	Version
	apache	cxf	*
	apache	cxf	*

JSON

To clipboard

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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-50630",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-12T14:03:00.752535Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-12T10:16:22.950",
  "references": [
    {
      "source": "security@apache.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://lists.apache.org/thread/bt7vnjzzkpd6vdhkxv103poor1jy5trm"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2026/06/11/7"
    }
  ],
  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-113"
        }
      ],
      "source": "security@apache.org",
      "type": "Secondary"
    }
  ]
}

GHSA-XF62-WR5P-5P95

Vulnerability from github – Published: 2026-06-12 12:31 – Updated: 2026-08-20 18:32

Summary

Apache CXF OAuth2 HTTP Response Splitting via WWW-Authenticate Realm Injection

Details

Severity

6.5 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.cxf:cxf-rt-rs-security-oauth2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.2.0"
            },
            {
              "fixed": "4.2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.cxf:cxf-rt-rs-security-oauth2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.1.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-50630"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-113"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-20T18:32:21Z",
    "nvd_published_at": "2026-06-12T10:16:22Z",
    "severity": "MODERATE"
  },
  "details": "A CRLF injection vulnerability exists in the OAuth2 AuthorizationUtils class. When constructing the WWW-Authenticate response header, the \u0027realm\u0027 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.\u00a0Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fixes this issue.",
  "id": "GHSA-xf62-wr5p-5p95",
  "modified": "2026-08-20T18:32:21Z",
  "published": "2026-06-12T12:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50630"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/cxf"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/bt7vnjzzkpd6vdhkxv103poor1jy5trm"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/06/11/7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache CXF OAuth2 HTTP Response Splitting via WWW-Authenticate Realm Injection"
}

WID-SEC-W-2026-1895

Vulnerability from csaf_certbund - Published: 2026-06-11 22:00 - Updated: 2026-06-14 22:00

Summary

Apache CXF: Mehrere Schwachstellen

Severity

Mittel

Scope

11 vulnerabilities in this advisory, including CVE-2026-50630.

CVE-2026-50630

Known affected: 2 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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CVE-2026-50630 (GCVE-0-2026-50630)

FKIE_CVE-2026-50630

GHSA-XF62-WR5P-5P95

WID-SEC-W-2026-1895

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