Vulnerability-Lookup

CVE-2026-26104 (GCVE-0-2026-26104)

Vulnerability from cvelistv5 – Published: 2026-02-25 10:51 – Updated: 2026-03-25 18:52

Title

Udisks: missing authorization check allows unprivileged users to back up luks headers via udisks d-bus api

Summary

A flaw was found in the udisks storage management daemon that allows unprivileged users to back up LUKS encryption headers without authorization. The issue occurs because a privileged D-Bus method responsible for exporting encryption metadata does not perform a policy check. As a result, sensitive cryptographic metadata can be read and written to attacker-controlled locations. This weakens the confidentiality guarantees of encrypted storage volumes.

Severity

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-25 20:49 UTC

CWE

CWE-862 - Missing Authorization

Assigner

redhat CNA under the redhat root

CNA scorecard B 82/100 over 1085 records in the last 180 days details

References

5 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:3476	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:5831	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-26104	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2433717	issue-trackingx_refsource_REDHAT
https://github.com/storaged-project/udisks/securi…

Impacted products

6 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:2.10.90-6.el10_1.1 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.1
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support	Unaffected: 0:2.10.90-5.el10_0.2 , < * (rpm) cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public

2026-02-25 06:00

Credits

Red Hat would like to thank Asim Viladi Oglu Manizada for reporting this issue.

Show details on NVD website

JSON

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            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
          },
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              "name": "RHSA-2026:3476",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:3476"
            },
            {
              "name": "RHSA-2026:5831",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:5831"
            },
            {
              "tags": [
                "vdb-entry",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2026-26104"
            },
            {
              "name": "RHBZ#2433717",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2433717"
            },
            {
              "url": "https://github.com/storaged-project/udisks/security/advisories/GHSA-fcvx-497g-6xmw"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-01-28T06:19:50.721Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2026-02-25T06:00:00.000Z",
              "value": "Made public."
            }
          ],
          "title": "Udisks: missing authorization check allows unprivileged users to back up luks headers via udisks d-bus api",
          "workarounds": [
            {
              "lang": "en",
              "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to a widespread installation base, or stability."
            }
          ],
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-862: Missing Authorization"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-26104",
        "datePublished": "2026-02-25T10:51:15.204Z",
        "dateReserved": "2026-02-11T12:48:26.436Z",
        "dateUpdated": "2026-03-25T18:52:14.488Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

ALSA-2026:3476

Vulnerability from osv_almalinux – Published: 2026-03-02 00:00 – Updated: 2026-03-05 07:49 – Source website

Summary

Important: udisks2 security update

Details

The Udisks project provides a daemon, tools, and libraries to access and manipulate disks, storage devices, and technologies.

Security Fix(es):

udisks: Missing Authorization Check Allows Unprivileged Users to Back Up LUKS Headers via udisks D-Bus API (CVE-2026-26104)
udisks: Missing Authorization Check Allows Unprivileged Users to Restore LUKS Headers via udisks D-Bus API (CVE-2026-26103)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2026:3476	ADVISORY
	https://access.redhat.com/security/cve/CVE-2026-26103	REPORT
	https://access.redhat.com/security/cve/CVE-2026-26104	REPORT
	https://bugzilla.redhat.com/2433717	REPORT
	https://bugzilla.redhat.com/2433719	REPORT
	https://errata.almalinux.org/10/ALSA-2026-3476.html	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "libudisks2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.10.90-6.el10_1.1.alma.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "libudisks2-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.10.90-6.el10_1.1.alma.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "udisks2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.10.90-6.el10_1.1.alma.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "udisks2-iscsi"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.10.90-6.el10_1.1.alma.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "udisks2-lsm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.10.90-6.el10_1.1.alma.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "udisks2-lvm2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.10.90-6.el10_1.1.alma.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The Udisks project provides a daemon, tools, and libraries to access and manipulate disks, storage devices, and technologies.  \n\nSecurity Fix(es):  \n\n  * udisks: Missing Authorization Check Allows Unprivileged Users to Back Up LUKS Headers via udisks D-Bus API (CVE-2026-26104)\n  * udisks: Missing Authorization Check Allows Unprivileged Users to Restore LUKS Headers via udisks D-Bus API (CVE-2026-26103)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:3476",
  "modified": "2026-03-05T07:49:03Z",
  "published": "2026-03-02T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:3476"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-26103"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-26104"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2433717"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2433719"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/10/ALSA-2026-3476.html"
    }
  ],
  "related": [
    "CVE-2026-26104",
    "CVE-2026-26103"
  ],
  "summary": "Important: udisks2 security update"
}

FKIE_CVE-2026-26104

Vulnerability from fkie_nvd - Published: 2026-02-25 11:16 - Updated: 2026-06-17 10:25

Severity

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

Summary

References

URL	Tags
secalert@redhat.com	https://access.redhat.com/errata/RHSA-2026:3476
secalert@redhat.com	https://access.redhat.com/errata/RHSA-2026:5831
secalert@redhat.com	https://access.redhat.com/security/cve/CVE-2026-26104	Vendor Advisory
secalert@redhat.com	https://bugzilla.redhat.com/show_bug.cgi?id=2433717	Issue Tracking, Vendor Advisory
secalert@redhat.com	https://github.com/storaged-project/udisks/security/advisories/GHSA-fcvx-497g-6xmw

Impacted products

	Vendor	Product	Version
	redhat	enterprise_linux	10.0
	freedesktop	udisks	2.0.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10.1"
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          "packageName": "udisks2",
          "product": "Red Hat Enterprise Linux 10",
          "vendor": "Red Hat",
          "versions": [
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              "versionType": "rpm"
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          "packageName": "udisks2",
          "product": "Red Hat Enterprise Linux 10.0 Extended Update Support",
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        },
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          "cpes": [
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          "defaultStatus": "unaffected",
          "packageName": "udisks",
          "product": "Red Hat Enterprise Linux 6",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:7"
          ],
          "defaultStatus": "unaffected",
          "packageName": "udisks2",
          "product": "Red Hat Enterprise Linux 7",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8"
          ],
          "defaultStatus": "unaffected",
          "packageName": "udisks2",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat"
        },
        {
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          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9"
          ],
          "defaultStatus": "unaffected",
          "packageName": "udisks2",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat"
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "D65C2163-CFC2-4ABB-8F4E-CB09CEBD006C",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:freedesktop:udisks:2.0.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "D31F1F1D-2E26-4D8E-A8C0-5395F302C444",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in the udisks storage management daemon that allows unprivileged users to back up LUKS encryption headers without authorization. The issue occurs because a privileged D-Bus method responsible for exporting encryption metadata does not perform a policy check. As a result, sensitive cryptographic metadata can be read and written to attacker-controlled locations. This weakens the confidentiality guarantees of encrypted storage volumes."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 una falla en el demonio de gesti\u00f3n de almacenamiento udisks que permite a usuarios sin privilegios hacer una copia de seguridad de los encabezados de cifrado LUKS sin autorizaci\u00f3n. El problema ocurre porque un m\u00e9todo D-Bus privilegiado responsable de exportar metadatos de cifrado no realiza una verificaci\u00f3n de pol\u00edtica. Como resultado, los metadatos criptogr\u00e1ficos sensibles pueden ser le\u00eddos y escritos en ubicaciones controladas por el atacante. Esto debilita las garant\u00edas de confidencialidad de los vol\u00famenes de almacenamiento cifrados."
    }
  ],
  "id": "CVE-2026-26104",
  "lastModified": "2026-06-17T10:25:43.577",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
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          "options": [
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              "exploitation": "none"
            },
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              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-02-25T20:49:09.190143Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-02-25T11:16:03.193",
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      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:3476"
    },
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      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:5831"
    },
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        "Vendor Advisory"
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  "vulnStatus": "Modified",
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          "lang": "en",
          "value": "CWE-862"
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      "source": "secalert@redhat.com",
      "type": "Secondary"
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}

GHSA-HJGQ-FF5J-5V2M

Vulnerability from github – Published: 2026-02-25 12:30 – Updated: 2026-03-25 21:30

Details

Severity

5.5 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-26104"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-25T11:16:03Z",
    "severity": "MODERATE"
  },
  "details": "A flaw was found in the udisks storage management daemon that allows unprivileged users to back up LUKS encryption headers without authorization. The issue occurs because a privileged D-Bus method responsible for exporting encryption metadata does not perform a policy check. As a result, sensitive cryptographic metadata can be read and written to attacker-controlled locations. This weakens the confidentiality guarantees of encrypted storage volumes.",
  "id": "GHSA-hjgq-ff5j-5v2m",
  "modified": "2026-03-25T21:30:25Z",
  "published": "2026-02-25T12:30:29Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/storaged-project/udisks/security/advisories/GHSA-fcvx-497g-6xmw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26104"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:3476"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:5831"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-26104"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2433717"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

OPENSUSE-SU-2026:10273-1

Vulnerability from csaf_opensuse - Published: 2026-02-27 00:00 - Updated: 2026-09-17 16:55

Summary

libudisks2-0-2.11.0-2.1 on GA media

Severity

Moderate

Scope

2 vulnerabilities in this advisory, including CVE-2026-26104.

CVE-2026-26104

5.5 (Medium)


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

Recommended: 44 products

Open the full advisory

RHSA-2026:3476

Vulnerability from csaf_opensuse - Published: 2026-03-02 00:00 - Updated: 2026-09-16 18:34

Summary

security update for udisks2

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2026-26104.

CVE-2026-26104

5.5 (Medium)


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

Recommended: 6 products

Open the full advisory

RHSA-2026:5831

Vulnerability from csaf_redhat - Published: 2026-03-25 18:51 - Updated: 2026-07-12 05:05

Summary

Red Hat Security Advisory: udisks2 security update

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2026-26104.

CVE-2026-26104

5.5 (Medium)


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

Fixed: 73 products

https://access.redhat.com/errata/RHSA-2026:5831

Open the full advisory

WID-SEC-W-2026-0554

Vulnerability from csaf_certbund - Published: 2026-03-01 23:00 - Updated: 2026-03-25 23:00

Summary

Red Hat Enterprise Linux (udisks): Mehrere Schwachstellen

Severity

Mittel

Scope

2 vulnerabilities in this advisory, including CVE-2026-26104.

CVE-2026-26104

Known affected: 4 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

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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.

Action not permitted

CVE-2026-26104 (GCVE-0-2026-26104)

ALSA-2026:3476

FKIE_CVE-2026-26104

GHSA-HJGQ-FF5J-5V2M

OPENSUSE-SU-2026:10273-1

RHSA-2026:3476

RHSA-2026:5831

WID-SEC-W-2026-0554

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour