Vulnerability-Lookup

CVE-2026-111456 (GCVE-0-2026-111456)

Vulnerability from cvelistv5 – Published: 2026-11-12 20:04 – Updated: 2026-11-12 23:56

Title

Candlepin: consumer certificate can register systems in another organization

Summary

A missing authorization check has been found in ConsumerResource.setupOwner() function of consumer registration module in the Candlepin package. The registration method checks permission to create a consumer only when the caller is a user. A consumer that authenticates with its identity certificate does not go through that check. A low-privileged network attacker or user who has a valid consumer certificate for one organization can register a new consumer in a different organization by supplying that organization's key. The response includes an identity certificate for the new consumer. With that certificate, the attacker can view the target organization's subscription pools. When the organization is not using simple content access, the attacker can attach that organization's entitlements to the new consumer.

Severity

7.1 (High)


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

CWE

CWE-639 - Authorization Bypass Through User-Controlled Key

Assigner

redhat CNA under the redhat root

CNA scorecard B 82/100 over 1206 records in the last 180 days details

References

5 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:99949	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:99950	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:99952	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-111456	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2553939	issue-trackingx_refsource_REDHAT

Impacted products

4 products

Vendor	Product	Version
Red Hat	Red Hat Satellite 6.16 for RHEL 8	Unaffected: 0:4.4.26-2.el8sat , < * (rpm) cpe:/a:redhat:satellite:6.16::el8 cpe:/a:redhat:satellite:6.16::el9 cpe:/a:redhat:satellite_capsule:6.16::el8 cpe:/a:redhat:satellite_capsule:6.16::el9 cpe:/a:redhat:satellite_utils:6.16::el8 cpe:/a:redhat:satellite_utils:6.16::el9
Red Hat	Red Hat Satellite 6.16 for RHEL 9	Unaffected: 0:4.4.26-2.el9sat , < * (rpm) cpe:/a:redhat:satellite:6.16::el8 cpe:/a:redhat:satellite:6.16::el9 cpe:/a:redhat:satellite_capsule:6.16::el8 cpe:/a:redhat:satellite_capsule:6.16::el9 cpe:/a:redhat:satellite_utils:6.16::el8 cpe:/a:redhat:satellite_utils:6.16::el9
Red Hat	Red Hat Satellite 6.17 for RHEL 9	Unaffected: 0:4.4.26-2.el9sat , < * (rpm) cpe:/a:redhat:satellite:6.17::el9 cpe:/a:redhat:satellite_capsule:6.17::el9 cpe:/a:redhat:satellite_maintenance:6.17::el9 cpe:/a:redhat:satellite_utils:6.17::el9
Red Hat	Red Hat Satellite 6.18 for RHEL 9	Unaffected: 0:4.6.7-2.el9sat , < * (rpm) cpe:/a:redhat:satellite:6.18::el9 cpe:/a:redhat:satellite_capsule:6.18::el9 cpe:/a:redhat:satellite_maintenance:6.18::el9 cpe:/a:redhat:satellite_utils:6.18::el9

Date Public

2026-10-27 12:00

Credits

Red Hat would like to thank Farid Narimanov for reporting this issue.

Show details on NVD website

JSON

To clipboard

{
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            "cpe:/a:redhat:satellite_capsule:6.16::el9",
            "cpe:/a:redhat:satellite_utils:6.16::el8",
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        }
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            "confidentialityImpact": "LOW",
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          "url": "https://access.redhat.com/errata/RHSA-2026:99952"
        },
        {
          "tags": [
            "vdb-entry",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2026-111456"
        },
        {
          "name": "RHBZ#2553939",
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          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2553939"
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          "time": "2026-10-16T04:29:13.136Z",
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          "time": "2026-10-27T12:00:00.000Z",
          "value": "Made public."
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      ],
      "title": "Candlepin: consumer certificate can register systems in another organization",
      "workarounds": [
        {
          "lang": "en",
          "value": "There is no configuration switch that stops a consumer certificate from calling registration while leaving normal consumer check-ins working. Restricting which clients can reach the Candlepin port limits who can attempt the call, and it does not stop a client that already has a valid consumer certificate and is allowed to use the API. Customers are advised to apply the relevant security updates when they become available."
        }
      ],
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                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:satellite:6.16::el8",
                  "cpe:/a:redhat:satellite:6.16::el9",
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              },
              {
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                  "cpe:/a:redhat:satellite:6.16::el9",
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                  "cpe:/a:redhat:satellite_capsule:6.16::el9",
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        ],
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}

FKIE_CVE-2026-111456

Vulnerability from fkie_nvd - Published: 2026-11-12 20:18 - Updated: 2026-11-13 00:20

Severity

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

Summary

References

	URL	Tags
	secalert@redhat.com	https://access.redhat.com/errata/RHSA-2026:99949
	secalert@redhat.com	https://access.redhat.com/errata/RHSA-2026:99950
	secalert@redhat.com	https://access.redhat.com/errata/RHSA-2026:99952
	secalert@redhat.com	https://access.redhat.com/security/cve/CVE-2026-111456
	secalert@redhat.com	https://bugzilla.redhat.com/show_bug.cgi?id=2553939

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:satellite:6.16::el8",
            "cpe:/a:redhat:satellite:6.16::el9",
            "cpe:/a:redhat:satellite_capsule:6.16::el8",
            "cpe:/a:redhat:satellite_capsule:6.16::el9",
            "cpe:/a:redhat:satellite_utils:6.16::el8",
            "cpe:/a:redhat:satellite_utils:6.16::el9"
          ],
          "defaultStatus": "affected",
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              "version": "0:4.4.26-2.el8sat",
              "versionType": "rpm"
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        },
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            "cpe:/a:redhat:satellite_capsule:6.16::el9",
            "cpe:/a:redhat:satellite_utils:6.16::el8",
            "cpe:/a:redhat:satellite_utils:6.16::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "candlepin",
          "product": "Red Hat Satellite 6.16 for RHEL 9",
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          "versions": [
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              "versionType": "rpm"
            }
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        },
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          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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            "cpe:/a:redhat:satellite:6.17::el9",
            "cpe:/a:redhat:satellite_capsule:6.17::el9",
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    }
  ],
  "id": "CVE-2026-111456",
  "lastModified": "2026-11-13T00:20:07.963",
  "metrics": {
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.2,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-11-12T20:18:16.067",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:99949"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:99950"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:99952"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/security/cve/CVE-2026-111456"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2553939"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    }
  ]
}

GHSA-JFF5-XMHG-5FJR

Vulnerability from github – Published: 2026-11-12 21:31 – Updated: 2026-11-13 00:31

Details

Severity

7.1 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-111456"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-639"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-11-12T20:18:16Z",
    "severity": "HIGH"
  },
  "details": "A missing authorization check has been found in ConsumerResource.setupOwner() function of consumer registration module in the Candlepin package. The registration method checks permission to create a consumer only when the caller is a user. A consumer that authenticates with its identity certificate does not go through that check. A low-privileged network attacker or user who has a valid consumer certificate for one organization can register a new consumer in a different organization by supplying that organization\u0027s key. The response includes an identity certificate for the new consumer. With that certificate, the attacker can view the target organization\u0027s subscription pools. When the organization is not using simple content access, the attacker can attach that organization\u0027s entitlements to the new consumer.",
  "id": "GHSA-jff5-xmhg-5fjr",
  "modified": "2026-11-13T00:31:56Z",
  "published": "2026-11-12T21:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111456"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:99949"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:99950"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:99952"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-111456"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2553939"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

RHSA-2026:99949

Vulnerability from csaf_redhat - Published: 2026-11-12 23:51 - Updated: 2026-11-13 13:03

Summary

Red Hat Security Advisory: Satellite 6.16.15 Async Update

Severity

Critical

Scope

21 vulnerabilities in this advisory, including CVE-2026-111456.

CVE-2026-111456

7.1 (High)


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

Fixed: 6 products Known not affected: 136 products

https://access.redhat.com/errata/RHSA-2026:99949

Open the full advisory

RHSA-2026:99950

Vulnerability from csaf_redhat - Published: 2026-11-12 23:52 - Updated: 2026-11-13 13:03

Summary

Red Hat Security Advisory: Satellite 6.17.13 Async Update

Severity

Critical

Scope

22 vulnerabilities in this advisory, including CVE-2026-111456.

CVE-2026-111456

7.1 (High)


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

Fixed: 3 products Known not affected: 88 products

https://access.redhat.com/errata/RHSA-2026:99950

Open the full advisory

RHSA-2026:99952

Vulnerability from csaf_redhat - Published: 2026-11-12 23:52 - Updated: 2026-11-13 13:03

Summary

Red Hat Security Advisory: Satellite 6.18.11 Async Update

Severity

Critical

Scope

22 vulnerabilities in this advisory, including CVE-2026-111456.

CVE-2026-111456

7.1 (High)


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

Fixed: 3 products Known not affected: 79 products

https://access.redhat.com/errata/RHSA-2026:99952

Open the full advisory

Workarounds

CNA · redhat

There is no configuration switch that stops a consumer certificate from calling registration while leaving normal consumer check-ins working. Restricting which clients can reach the Candlepin port limits who can attempt the call, and it does not stop a client that already has a valid consumer certificate and is allowed to use the API. Customers are advised to apply the relevant security updates when they become available.

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

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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-2026-111456 (GCVE-0-2026-111456)

FKIE_CVE-2026-111456

GHSA-JFF5-XMHG-5FJR

RHSA-2026:99949

RHSA-2026:99950

RHSA-2026:99952

Workarounds

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour