Vulnerability-Lookup

FKIE_CVE-2026-55997

Vulnerability from fkie_nvd - Published: 2026-08-05 08:16 - Updated: 2026-09-01 20:54

Severity

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

Summary

Rancher issues long-lived registration tokens to authenticate nodes and agents joining a downstream cluster. These tokens were stored and exposed in plaintext with no expiration, so a malicious user could obtain one either through the Rancher API, etcd, stored automation, or direct file access on a node, and could use it at any time to register a rogue node into the cluster.

References

	URL	Tags
	meissner@suse.de	https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-55997
	meissner@suse.de	https://github.com/rancher/rancher/security/advisories/GHSA-7r53-jvhg-9jq4

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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  "affected": [
    {
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        {
          "defaultStatus": "unaffected",
          "packageName": "github.com/rancher/rancher",
          "product": "rancher",
          "vendor": "rancher",
          "versions": [
            {
              "lessThan": "2.14.4",
              "status": "affected",
              "version": "2.14.0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.13.8",
              "status": "affected",
              "version": "2.13.0",
              "versionType": "semver"
            }
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        }
      ],
      "source": "meissner@suse.de"
    }
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    }
  ],
  "id": "CVE-2026-55997",
  "lastModified": "2026-09-01T20:54:51.287",
  "metrics": {
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 6.0,
        "source": "meissner@suse.de",
        "type": "Secondary"
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          "options": [
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          "role": "CISA Coordinator",
          "timestamp": "2026-08-05T00:00:00+00:00",
          "version": "2.0.3"
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  "published": "2026-08-05T08:16:34.330",
  "references": [
    {
      "source": "meissner@suse.de",
      "url": "https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-55997"
    },
    {
      "source": "meissner@suse.de",
      "url": "https://github.com/rancher/rancher/security/advisories/GHSA-7r53-jvhg-9jq4"
    }
  ],
  "sourceIdentifier": "meissner@suse.de",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-312"
        }
      ],
      "source": "meissner@suse.de",
      "type": "Secondary"
    }
  ]
}

CVE-2026-55997 (GCVE-0-2026-55997)

Vulnerability from cvelistv5 – Published: 2026-08-05 07:53 – Updated: 2026-08-06 03:55

Title

Long-lived Rancher registration token exposed in plaintext

Summary

Severity

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-05 00:00 UTC

CWE

CWE-312 - Cleartext storage of sensitive information

Assigner

suse mitre root

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
rancher	rancher	Affected: 2.14.0 , < 2.14.4 (semver) Affected: 2.13.0 , < 2.13.8 (semver)

Show details on NVD website

JSON

To clipboard

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                  },
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                  },
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                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-05T00:00:00+00:00",
                "version": "2.0.3"
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          "shortName": "CISA-ADP"
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        }
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      "source": {
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    "dateReserved": "2026-06-18T09:26:55.987Z",
    "dateUpdated": "2026-08-06T03:55:23.543Z",
    "state": "PUBLISHED"
  },
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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.

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.
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.