Vulnerability-Lookup

CVE-2026-50623 (GCVE-0-2026-50623)

Vulnerability from cvelistv5 – Published: 2026-06-12 08:52 – Updated: 2026-08-07 12:42

Title

Apache CXF: Authentication Bypass in OAuth2 TokenIntrospectionService

Summary

An authentication bypass vulnerability exists in the OAuth2 TokenIntrospectionService in Apache CXF. Due to a missing 'throw' keyword in the security context check, the introspection endpoint (/services/oauth2/introspect) can be accessed by any unauthenticated network attacker. However note that this is a safeguard only in the case that someone forgot to enable authentication on the service. Users are recommended to upgrade to version 4.2.2 or 4.1.7 or 3.6.12, which fixes this issue.

Severity

4.8 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-13 03:55 UTC

CWE

CWE-287 - Improper Authentication

Assigner

apache

References

2 references

URL	Tags
https://lists.apache.org/thread/ydzj8m5mqmjy13xgy…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/06/11/3

Impacted products

1 product

Vendor	Product	Version
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)

Credits

Guanping Zhang reported this vulnerability.

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-50623

Vulnerability from fkie_nvd - Published: 2026-06-12 10:16 - Updated: 2026-06-17 10:57

Severity

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

Summary

References

	URL	Tags
	security@apache.org	https://lists.apache.org/thread/ydzj8m5mqmjy13xgyj9mkk9hfff63qq7	Vendor Advisory
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/06/11/3	Mailing List, Third Party Advisory

Impacted products

	Vendor	Product	Version
	apache	cxf	*
	apache	cxf	*

JSON

To clipboard

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GHSA-542G-M3FX-Q86F

Vulnerability from github – Published: 2026-06-12 12:31 – Updated: 2026-08-07 15:32

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

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  "modified": "2026-08-07T15:32:56Z",
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}

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

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung: Apache CXF ist ein Open Source-Web Service-Framework.

Angriff: Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Apache CXF ausnutzen, um Sicherheitsvorkehrungen zu umgehen, XML-External-Entity-Angriffe durchzuführen, Daten zu manipulieren oder vertrauliche Informationen offenzulegen.

Betroffene Betriebssysteme: - Linux - UNIX - Windows

CVE-2026-49875

Affected products

Known affected 2 products

Product	Identifier	Version	Remediation
Apache CXF <4.2.2 Apache / CXF		<4.2.2
Apache CXF <4.1.7 Apache / CXF		<4.1.7

CVE-2026-50623

Affected products

Known affected 2 products

Product	Identifier	Version	Remediation
Apache CXF <4.2.2 Apache / CXF		<4.2.2
Apache CXF <4.1.7 Apache / CXF		<4.1.7

CVE-2026-50627

Affected products

Known affected 2 products

Product	Identifier	Version	Remediation
Apache CXF <4.2.2 Apache / CXF		<4.2.2
Apache CXF <4.1.7 Apache / CXF		<4.1.7

CVE-2026-50628

Affected products

Known affected 2 products

Product	Identifier	Version	Remediation
Apache CXF <4.2.2 Apache / CXF		<4.2.2
Apache CXF <4.1.7 Apache / CXF		<4.1.7

CVE-2026-50629

Affected products

Known affected 2 products

Product	Identifier	Version	Remediation
Apache CXF <4.2.2 Apache / CXF		<4.2.2
Apache CXF <4.1.7 Apache / CXF		<4.1.7

CVE-2026-50630

Affected products

Known affected 2 products

Product	Identifier	Version	Remediation
Apache CXF <4.2.2 Apache / CXF		<4.2.2
Apache CXF <4.1.7 Apache / CXF		<4.1.7

CVE-2026-50631

Affected products

Known affected 2 products

Product	Identifier	Version	Remediation
Apache CXF <4.2.2 Apache / CXF		<4.2.2
Apache CXF <4.1.7 Apache / CXF		<4.1.7

CVE-2026-50632

Affected products

Known affected 2 products

Product	Identifier	Version	Remediation
Apache CXF <4.2.2 Apache / CXF		<4.2.2
Apache CXF <4.1.7 Apache / CXF		<4.1.7

CVE-2026-50633

Affected products

Known affected 2 products

Product	Identifier	Version	Remediation
Apache CXF <4.2.2 Apache / CXF		<4.2.2
Apache CXF <4.1.7 Apache / CXF		<4.1.7

CVE-2026-50634

Affected products

Known affected 2 products

Product	Identifier	Version	Remediation
Apache CXF <4.2.2 Apache / CXF		<4.2.2
Apache CXF <4.1.7 Apache / CXF		<4.1.7

CVE-2026-50645

Affected products

Known affected 2 products

Product	Identifier	Version	Remediation
Apache CXF <4.2.2 Apache / CXF		<4.2.2
Apache CXF <4.1.7 Apache / CXF		<4.1.7

References

9 references

URL	Category
https://wid.cert-bund.de/.well-known/csaf/white/2…	self
https://wid.cert-bund.de/portal/wid/securityadvis…	self
https://cxf.apache.org/download.html	external
https://cxf.apache.org/security-advisories.data/C…	external
https://cxf.apache.org/security-advisories.data/C…	external
https://cxf.apache.org/security-advisories.data/C…	external
https://cxf.apache.org/security-advisories.data/C…	external
https://cxf.apache.org/security-advisories.data/C…	external
https://cxf.apache.org/security-advisories.data/C…	external

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Apache CXF ist ein Open Source-Web Service-Framework.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Apache CXF ausnutzen, um Sicherheitsvorkehrungen zu umgehen, XML-External-Entity-Angriffe durchzuf\u00fchren, Daten zu manipulieren oder vertrauliche Informationen offenzulegen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- UNIX\n- Windows",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-1895 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1895.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-1895 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1895"
      },
      {
        "category": "external",
        "summary": "Apache CXF Releases Download vom 2026-06-11",
        "url": "https://cxf.apache.org/download.html"
      },
      {
        "category": "external",
        "summary": "Apache CXF Security Advisory CVE-2026-49875 vom 2026-06-11",
        "url": "https://cxf.apache.org/security-advisories.data/CVE-2026-49875.txt"
      },
      {
        "category": "external",
        "summary": "Apache CXF Security Advisory CVE-2026-50623 vom 2026-06-11",
        "url": "https://cxf.apache.org/security-advisories.data/CVE-2026-50623.txt"
      },
      {
        "category": "external",
        "summary": "Apache CXF Security Advisory CVE-2026-50627 vom 2026-06-11",
        "url": "https://cxf.apache.org/security-advisories.data/CVE-2026-50627.txt"
      },
      {
        "category": "external",
        "summary": "Apache CXF Security Advisory CVE-2026-50628 vom 2026-06-11",
        "url": "https://cxf.apache.org/security-advisories.data/CVE-2026-50628.txt"
      },
      {
        "category": "external",
        "summary": "Apache CXF Security Advisory CVE-2026-50629 vom 2026-06-11",
        "url": "https://cxf.apache.org/security-advisories.data/CVE-2026-50629.txt"
      },
      {
        "category": "external",
        "summary": "Apache CXF Security Advisory CVE-2026-50630 vom 2026-06-11",
        "url": "https://cxf.apache.org/security-advisories.data/CVE-2026-50630.txt"
      }
    ],
    "source_lang": "en-US",
    "title": "Apache CXF: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2026-06-14T22:00:00.000+00:00",
      "generator": {
        "date": "2026-06-15T07:40:31.122+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-1895",
      "initial_release_date": "2026-06-11T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-06-11T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-06-14T22:00:00.000+00:00",
          "number": "2",
          "summary": "Referenz(en) aufgenommen: EUVD-2026-36400, EUVD-2026-36403, EUVD-2026-36402, EUVD-2026-36401, EUVD-2026-36399, EUVD-2026-36398, EUVD-2026-36397, EUVD-2026-36396, EUVD-2026-36395, EUVD-2026-36393, EUVD-2026-36394"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c4.2.2",
                "product": {
                  "name": "Apache CXF \u003c4.2.2",
                  "product_id": "T055289"
                }
              },
              {
                "category": "product_version",
                "name": "4.2.2",
                "product": {
                  "name": "Apache CXF 4.2.2",
                  "product_id": "T055289-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:apache:cxf:4.2.2"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c4.1.7",
                "product": {
                  "name": "Apache CXF \u003c4.1.7",
                  "product_id": "T055290"
                }
              },
              {
                "category": "product_version",
                "name": "4.1.7",
                "product": {
                  "name": "Apache CXF 4.1.7",
                  "product_id": "T055290-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:apache:cxf:4.1.7"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "CXF"
          }
        ],
        "category": "vendor",
        "name": "Apache"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-49875",
      "product_status": {
        "known_affected": [
          "T055289",
          "T055290"
        ]
      },
      "release_date": "2026-06-11T22:00:00.000+00:00",
      "title": "CVE-2026-49875"
    },
    {
      "cve": "CVE-2026-50623",
      "product_status": {
        "known_affected": [
          "T055289",
          "T055290"
        ]
      },
      "release_date": "2026-06-11T22:00:00.000+00:00",
      "title": "CVE-2026-50623"
    },
    {
      "cve": "CVE-2026-50627",
      "product_status": {
        "known_affected": [
          "T055289",
          "T055290"
        ]
      },
      "release_date": "2026-06-11T22:00:00.000+00:00",
      "title": "CVE-2026-50627"
    },
    {
      "cve": "CVE-2026-50628",
      "product_status": {
        "known_affected": [
          "T055289",
          "T055290"
        ]
      },
      "release_date": "2026-06-11T22:00:00.000+00:00",
      "title": "CVE-2026-50628"
    },
    {
      "cve": "CVE-2026-50629",
      "product_status": {
        "known_affected": [
          "T055289",
          "T055290"
        ]
      },
      "release_date": "2026-06-11T22:00:00.000+00:00",
      "title": "CVE-2026-50629"
    },
    {
      "cve": "CVE-2026-50630",
      "product_status": {
        "known_affected": [
          "T055289",
          "T055290"
        ]
      },
      "release_date": "2026-06-11T22:00:00.000+00:00",
      "title": "CVE-2026-50630"
    },
    {
      "cve": "CVE-2026-50631",
      "product_status": {
        "known_affected": [
          "T055289",
          "T055290"
        ]
      },
      "release_date": "2026-06-11T22:00:00.000+00:00",
      "title": "CVE-2026-50631"
    },
    {
      "cve": "CVE-2026-50632",
      "product_status": {
        "known_affected": [
          "T055289",
          "T055290"
        ]
      },
      "release_date": "2026-06-11T22:00:00.000+00:00",
      "title": "CVE-2026-50632"
    },
    {
      "cve": "CVE-2026-50633",
      "product_status": {
        "known_affected": [
          "T055289",
          "T055290"
        ]
      },
      "release_date": "2026-06-11T22:00:00.000+00:00",
      "title": "CVE-2026-50633"
    },
    {
      "cve": "CVE-2026-50634",
      "product_status": {
        "known_affected": [
          "T055289",
          "T055290"
        ]
      },
      "release_date": "2026-06-11T22:00:00.000+00:00",
      "title": "CVE-2026-50634"
    },
    {
      "cve": "CVE-2026-50645",
      "product_status": {
        "known_affected": [
          "T055289",
          "T055290"
        ]
      },
      "release_date": "2026-06-11T22:00:00.000+00:00",
      "title": "CVE-2026-50645"
    }
  ]
}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

CVE-2026-50623 (GCVE-0-2026-50623)

FKIE_CVE-2026-50623

GHSA-542G-M3FX-Q86F

WID-SEC-W-2026-1895

Tags

Sightings

Nomenclature