Vulnerability-Lookup

CVE-2026-55998 (GCVE-0-2026-55998)

Vulnerability from cvelistv5 – Published: 2026-08-05 07:51 – Updated: 2026-08-05 13:13

Title

Cluster Existence Oracle via Unauthenticated Import Endpoint

Summary

The endpoint /v3/import/{token}_{clusterId}.yaml retrieves the cluster object before validating the token. When a valid cluster ID references a cluster that has private registry secrets configured, a nil pointer dereference in pkg/systemtemplate/private_registry.go causes the request to return HTTP 502 Bad Gateway. For cluster IDs that do not exist, the endpoint returns HTTP 200. This observable difference in response codes constitutes a reliable enumeration oracle.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-204 - Observable response discrepancy

Assigner

suse

References

2 references

URL	Tags
https://github.com/rancher/rancher/security/advis…
https://bugzilla.suse.com/show_bug.cgi?id=CVE-202…

Impacted products

1 product

Vendor	Product	Version
SUSE	Rancher	Affected: 2.14.0 , < 2.14.4 (semver) Affected: 2.13.0 , < 2.13.8 (semver) Affected: 2.12.0 , < 2.12.12 (semver) Affected: 2.11.0 , < 2.11.16 (semver)

Credits

This vulnerability was discovered and reported by Michael Wollner (@ibonok) from Deutsche Telekom AG.

Show details on NVD website

JSON

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WID-SEC-W-2026-2600

Vulnerability from csaf_certbund - Published: 2026-07-30 22:00 - Updated: 2026-08-05 22:00

Summary

Rancher: Mehrere Schwachstellen

Severity

Hoch

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: Rancher ist ein Werkzeug für die Verwaltung von Kubernetes-Container basierten Umgebungen.

Angriff: Ein Angreifer kann mehrere Schwachstellen in Rancher ausnutzen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, und um Informationen offenzulegen.

Betroffene Betriebssysteme: - Linux - UNIX

CVE-2026-44945

Affected products

Known affected 4 products

Product	Identifier	Version	Remediation
Rancher Rancher <2.14.4 Rancher / Rancher		<2.14.4
Rancher Rancher <2.13.8 Rancher / Rancher		<2.13.8
Rancher Rancher <2.12.12 Rancher / Rancher		<2.12.12
Rancher Rancher <2.11.16 Rancher / Rancher		<2.11.16

CVE-2026-55996

Affected products

Known affected 4 products

Product	Identifier	Version	Remediation
Rancher Rancher <2.14.4 Rancher / Rancher		<2.14.4
Rancher Rancher <2.13.8 Rancher / Rancher		<2.13.8
Rancher Rancher <2.12.12 Rancher / Rancher		<2.12.12
Rancher Rancher <2.11.16 Rancher / Rancher		<2.11.16

CVE-2026-55997

Affected products

Known affected 4 products

Product	Identifier	Version	Remediation
Rancher Rancher <2.14.4 Rancher / Rancher		<2.14.4
Rancher Rancher <2.13.8 Rancher / Rancher		<2.13.8
Rancher Rancher <2.12.12 Rancher / Rancher		<2.12.12
Rancher Rancher <2.11.16 Rancher / Rancher		<2.11.16

CVE-2026-55998

Affected products

Known affected 4 products

Product	Identifier	Version	Remediation
Rancher Rancher <2.14.4 Rancher / Rancher		<2.14.4
Rancher Rancher <2.13.8 Rancher / Rancher		<2.13.8
Rancher Rancher <2.12.12 Rancher / Rancher		<2.12.12
Rancher Rancher <2.11.16 Rancher / Rancher		<2.11.16

CVE-2026-59675

Affected products

Known affected 4 products

Product	Identifier	Version	Remediation
Rancher Rancher <2.14.4 Rancher / Rancher		<2.14.4
Rancher Rancher <2.13.8 Rancher / Rancher		<2.13.8
Rancher Rancher <2.12.12 Rancher / Rancher		<2.12.12
Rancher Rancher <2.11.16 Rancher / Rancher		<2.11.16

References

7 references

URL	Category
https://wid.cert-bund.de/.well-known/csaf/white/2…	self
https://wid.cert-bund.de/portal/wid/securityadvis…	self
https://github.com/rancher/rancher/security/advis…	external
https://github.com/rancher/rancher/security/advis…	external
https://github.com/rancher/rancher/security/advis…	external
https://github.com/rancher/rancher/security/advis…	external
https://github.com/rancher/rancher/security/advis…	external

JSON

To clipboard

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  "document": {
    "aggregate_severity": {
      "text": "hoch"
    },
    "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": "Rancher ist ein Werkzeug f\u00fcr die Verwaltung von Kubernetes-Container basierten Umgebungen.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein Angreifer kann mehrere Schwachstellen in Rancher ausnutzen, um seine Privilegien zu erh\u00f6hen, um einen Denial of Service Angriff durchzuf\u00fchren, und um Informationen offenzulegen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- UNIX",
        "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-2026-2600 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2600.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-2600 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2600"
      },
      {
        "category": "external",
        "summary": "GitHub Security Advisory GHSA-23h9-rr79-r3gh vom 2026-07-30",
        "url": "https://github.com/rancher/rancher/security/advisories/GHSA-23h9-rr79-r3gh"
      },
      {
        "category": "external",
        "summary": "GitHub Security Advisory GHSA-7r53-jvhg-9jq4 vom 2026-07-30",
        "url": "https://github.com/rancher/rancher/security/advisories/GHSA-7r53-jvhg-9jq4"
      },
      {
        "category": "external",
        "summary": "GitHub Security Advisory GHSA-9jxv-832x-45q9 vom 2026-07-30",
        "url": "https://github.com/rancher/rancher/security/advisories/GHSA-9jxv-832x-45q9"
      },
      {
        "category": "external",
        "summary": "GitHub Security Advisory GHSA-g4f6-44g4-23xm vom 2026-07-30",
        "url": "https://github.com/rancher/rancher/security/advisories/GHSA-g4f6-44g4-23xm"
      },
      {
        "category": "external",
        "summary": "GitHub Security Advisory GHSA-v584-7w32-jwpq vom 2026-07-30",
        "url": "https://github.com/rancher/rancher/security/advisories/GHSA-v584-7w32-jwpq"
      }
    ],
    "source_lang": "en-US",
    "title": "Rancher: Mehrere Schwachstellen",
    "tracking": {
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        "date": "2026-08-06T08:52:30.378+00:00",
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      "id": "WID-SEC-W-2026-2600",
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      "revision_history": [
        {
          "date": "2026-07-30T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-08-04T22:00:00.000+00:00",
          "number": "2",
          "summary": "Referenz(en) aufgenommen: EUVD-2026-53291, EUVD-2026-53290"
        },
        {
          "date": "2026-08-05T22:00:00.000+00:00",
          "number": "3",
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                  "product_id": "T057446"
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                "product": {
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                "name": "\u003c2.12.12",
                "product": {
                  "name": "Rancher Rancher \u003c2.12.12",
                  "product_id": "T057448"
                }
              },
              {
                "category": "product_version",
                "name": "2.12.12",
                "product": {
                  "name": "Rancher Rancher 2.12.12",
                  "product_id": "T057448-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:rancher:rancher:2.12.12"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c2.11.16",
                "product": {
                  "name": "Rancher Rancher \u003c2.11.16",
                  "product_id": "T057449"
                }
              },
              {
                "category": "product_version",
                "name": "2.11.16",
                "product": {
                  "name": "Rancher Rancher 2.11.16",
                  "product_id": "T057449-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:rancher:rancher:2.11.16"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Rancher"
          }
        ],
        "category": "vendor",
        "name": "Rancher"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-44945",
      "product_status": {
        "known_affected": [
          "T057446",
          "T057447",
          "T057448",
          "T057449"
        ]
      },
      "release_date": "2026-07-30T22:00:00.000+00:00",
      "title": "CVE-2026-44945"
    },
    {
      "cve": "CVE-2026-55996",
      "product_status": {
        "known_affected": [
          "T057446",
          "T057447",
          "T057448",
          "T057449"
        ]
      },
      "release_date": "2026-07-30T22:00:00.000+00:00",
      "title": "CVE-2026-55996"
    },
    {
      "cve": "CVE-2026-55997",
      "product_status": {
        "known_affected": [
          "T057446",
          "T057447",
          "T057448",
          "T057449"
        ]
      },
      "release_date": "2026-07-30T22:00:00.000+00:00",
      "title": "CVE-2026-55997"
    },
    {
      "cve": "CVE-2026-55998",
      "product_status": {
        "known_affected": [
          "T057446",
          "T057447",
          "T057448",
          "T057449"
        ]
      },
      "release_date": "2026-07-30T22:00:00.000+00:00",
      "title": "CVE-2026-55998"
    },
    {
      "cve": "CVE-2026-59675",
      "product_status": {
        "known_affected": [
          "T057446",
          "T057447",
          "T057448",
          "T057449"
        ]
      },
      "release_date": "2026-07-30T22:00:00.000+00:00",
      "title": "CVE-2026-59675"
    }
  ]
}

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.

Action not permitted

CVE-2026-55998 (GCVE-0-2026-55998)

WID-SEC-W-2026-2600

Tags

Sightings

Nomenclature