Vulnerability-Lookup

CVE-2026-57915 (GCVE-0-2026-57915)

Vulnerability from cvelistv5 – Published: 2026-06-26 12:09 – Updated: 2026-08-03 12:05

Title

Apache Kerby: Kerberos Pre-Authentication Bypass

Summary

It is possible to bypass the Kerberos pre-authentication check in Apache Kerby by sending a PA-DATA with an unrecognized or unsupported type. Users are recommended to upgrade to version 2.1.2, which fixes this issue.

Severity

7.3 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-26 14:38 UTC

CWE

CWE-304 - Missing Critical Step in Authentication
CWE-358 - Improperly Implemented Security Check for Standard

Assigner

apache CNA under the mitre root

CNA scorecard B 76/100 over 1078 records in the last 180 days details

References

5 references

URL	Tags
https://lists.apache.org/thread/1y3glgh3kzwoxo5m2…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/06/26/8
https://access.redhat.com/security/cve/CVE-2026-57915	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2493407	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

7 products

Vendor	Product	Version	CPE status
Apache Software Foundation	Apache Kerby	Affected: 0 , < 2.1.2 (semver)	guessed
Red Hat	Red Hat AMQ Clients	cpe:/a:redhat:amq_clients:2023
Red Hat	Red Hat Data Grid 8	cpe:/a:redhat:jboss_data_grid:8
Red Hat	Red Hat Fuse 7	cpe:/a:redhat:jboss_fuse:7
Red Hat	Red Hat JBoss Enterprise Application Platform Expansion Pack	cpe:/a:redhat:jbosseapxp
Red Hat	streams for Apache Kafka 2	cpe:/a:redhat:amq_streams:2
Red Hat	streams for Apache Kafka 3	cpe:/a:redhat:amq_streams:3

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CNVD-2026-26085

Vulnerability from cnvd - Published: 2026-06-29

Title

Apache Kerby Kerberos预认证绕过漏洞

Description

Apache Kerby是一个Kerberos协议的Java实现库，主要用于提供认证和授权服务。 Apache Kerby存在Kerberos预认证绕过漏洞。该漏洞源于当用户发送包含未识别或不受支持类型的PA-DATA时，未能正确进行预认证检查，攻击者可利用该漏洞绕过Kerberos预认证机制。

Severity

高

Patch Name

Apache Kerby Kerberos预认证绕过漏洞的补丁

Patch Description

Apache Kerby是一个Kerberos协议的Java实现库，主要用于提供认证和授权服务。 Apache Kerby存在Kerberos预认证绕过漏洞。该漏洞源于当用户发送包含未识别或不受支持类型的PA-DATA时，未能正确进行预认证检查，攻击者可利用该漏洞绕过Kerberos预认证机制。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://lists.apache.org/thread/1y3glgh3kzwoxo5m2lq504cjlh1dsrfh

Reference

https://nvd.nist.gov/vuln/detail/CVE-2026-57915

Impacted products

Name
Apache Apache Kerby <2.1.2

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-57915",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-57915"
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  "number": "CNVD-2026-26085",
  "openTime": "2026-06-29",
  "patchDescription": "Apache Kerby\u662f\u4e00\u4e2aKerberos\u534f\u8bae\u7684Java\u5b9e\u73b0\u5e93\uff0c\u4e3b\u8981\u7528\u4e8e\u63d0\u4f9b\u8ba4\u8bc1\u548c\u6388\u6743\u670d\u52a1\u3002\r\n\r\nApache Kerby\u5b58\u5728Kerberos\u9884\u8ba4\u8bc1\u7ed5\u8fc7\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5f53\u7528\u6237\u53d1\u9001\u5305\u542b\u672a\u8bc6\u522b\u6216\u4e0d\u53d7\u652f\u6301\u7c7b\u578b\u7684PA-DATA\u65f6\uff0c\u672a\u80fd\u6b63\u786e\u8fdb\u884c\u9884\u8ba4\u8bc1\u68c0\u67e5\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7Kerberos\u9884\u8ba4\u8bc1\u673a\u5236\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Apache Kerby Kerberos\u9884\u8ba4\u8bc1\u7ed5\u8fc7\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
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  "serverity": "\u9ad8",
  "submitTime": "2026-06-27",
  "title": "Apache Kerby Kerberos\u9884\u8ba4\u8bc1\u7ed5\u8fc7\u6f0f\u6d1e"
}

FKIE_CVE-2026-57915

Vulnerability from fkie_nvd - Published: 2026-06-26 13:16 - Updated: 2026-10-25 22:10

Severity

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

Summary

References

	URL	Tags
	security@apache.org	https://lists.apache.org/thread/1y3glgh3kzwoxo5m2lq504cjlh1dsrfh
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/06/26/8
	0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/security/cve/CVE-2026-57915
	0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://bugzilla.redhat.com/show_bug.cgi?id=2493407
	0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-57915.json

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-57915.json"
    }
  ],
  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-304"
        }
      ],
      "source": "security@apache.org",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-358"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "type": "Secondary"
    }
  ]
}

GHSA-262P-FJ3F-XH7V

Vulnerability from github – Published: 2026-06-26 15:32 – Updated: 2026-06-30 03:37

Details

Severity

7.3 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-57915"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-304",
      "CWE-358"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-26T13:16:35Z",
    "severity": "HIGH"
  },
  "details": "It is possible to bypass the Kerberos pre-authentication check in Apache Kerby by sending a PA-DATA with an unrecognized or unsupported type. Users are recommended to upgrade to version 2.1.2, which fixes this issue.",
  "id": "GHSA-262p-fj3f-xh7v",
  "modified": "2026-06-30T03:37:14Z",
  "published": "2026-06-26T15:32:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57915"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-57915"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2493407"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/1y3glgh3kzwoxo5m2lq504cjlh1dsrfh"
    },
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-57915.json"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/06/26/8"
    }
  ],
  "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:L",
      "type": "CVSS_V3"
    }
  ]
}

RHSA-2026:69459

Vulnerability from csaf_redhat - Published: 2026-09-21 14:38 - Updated: 2026-10-26 11:21

Summary

Red Hat Security Advisory: AMQ Clients 2026.Q3

Severity

Important

Scope

28 vulnerabilities in this advisory, including CVE-2026-57915.

CVE-2026-57915

A flaw was found in Apache Kerby. An attacker can bypass the Kerberos pre-authentication check by sending a Pre-Authentication Data (PA-DATA) packet with an unrecognized or unsupported type. This vulnerability allows an attacker to circumvent the initial authentication step, potentially leading to unauthorized access or impersonation within a Kerberos-protected environment.

7.3 (High)


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

Fixed: 1 product

https://access.redhat.com/errata/RHSA-2026:69459

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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.

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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-2026-57915 (GCVE-0-2026-57915)

CNVD-2026-26085

FKIE_CVE-2026-57915

GHSA-262P-FJ3F-XH7V

RHSA-2026:69459

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