Vulnerability-Lookup

CVE-2026-67213 (GCVE-0-2026-67213)

Vulnerability from cvelistv5 – Published: 2026-07-29 13:32 – Updated: 2026-07-29 14:42

Title

nanoid before 5.1.6 Infinite Loop via Zero Size in customAlphabet and customRandom

Summary

nanoid (Nano ID) before 5.1.6 contains an infinite loop in the customAlphabet and customRandom functions. When these functions are configured with a size of 0, the internal generation loop never satisfies its exit condition and spins indefinitely, hanging the calling thread. An application that passes an unvalidated, attacker-controlled size of 0 to these functions is exposed to a denial-of-service condition.

Severity

8.2 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

5.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

VulnCheck

References

3 references

URL	Tags
https://github.com/ai/nanoid/releases/tag/5.1.6	release-notes
https://github.com/ai/nanoid/commit/cb3626d0f3342…	patch
https://www.vulncheck.com/advisories/nanoid-befor…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
nanoid_project	nanoid	Affected: 0 , < 5.1.6 (semver) Unaffected: 5.1.6 (semver)

Date Public

2025-09-22 00:00

Show details on NVD website

JSON

To clipboard

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}

GHSA-2V37-7H3G-55P8

Vulnerability from github – Published: 2026-07-29 15:31 – Updated: 2026-07-29 15:31

Details

Severity

5.9 (Medium)


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

8.2 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-67213"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-835"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-29T14:16:34Z",
    "severity": "HIGH"
  },
  "details": "nanoid (Nano ID) before 5.1.6 contains an infinite loop in the customAlphabet and customRandom functions. When these functions are configured with a size of 0, the internal generation loop never satisfies its exit condition and spins indefinitely, hanging the calling thread. An application that passes an unvalidated, attacker-controlled size of 0 to these functions is exposed to a denial-of-service condition.",
  "id": "GHSA-2v37-7h3g-55p8",
  "modified": "2026-07-29T15:31:12Z",
  "published": "2026-07-29T15:31:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-67213"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ai/nanoid/commit/cb3626d0f3342fdf179cd425fd9c4fbb92c7d0e7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ai/nanoid/releases/tag/5.1.6"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/nanoid-before-infinite-loop-via-zero-size-in-customalphabet-and-customrandom"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

ubuntu-cve-2026-67213

Vulnerability from osv_ubuntu

Published

2026-07-30 00:00

Modified

2026-07-30 00:00

Summary

Details

(nanoid (Nano ID) before 5.1.6 contains an infinite loop in the customA ...)

Severity

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-67213	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-67213	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-postcss",
            "binary_version": "6.0.23-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "node-postcss",
        "purl": "pkg:deb/ubuntu/node-postcss@6.0.23-3?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.0.23-1",
        "6.0.23-3"
      ]
    },
    {
      "ecosystem_specific": {
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            "binary_version": "8.4.6+~cs7.3.21-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "node-postcss",
        "purl": "pkg:deb/ubuntu/node-postcss@8.4.6+~cs7.3.21-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.2.1+~cs5.3.23-8",
        "8.4.5+~cs7.1.51-2",
        "8.4.6+~cs7.3.21-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-postcss",
            "binary_version": "8.4.31+~cs8.0.26-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "node-postcss",
        "purl": "pkg:deb/ubuntu/node-postcss@8.4.31+~cs8.0.26-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.4.20+~cs8.0.23-1",
        "8.4.31+~cs8.0.26-1"
      ]
    }
  ],
  "aliases": [],
  "details": "(nanoid (Nano ID) before 5.1.6 contains an infinite loop in the customA ...)",
  "id": "UBUNTU-CVE-2026-67213",
  "modified": "2026-07-30T00:00:00Z",
  "published": "2026-07-30T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-67213"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-67213"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-67213"
  ]
}

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-2026-67213 (GCVE-0-2026-67213)

GHSA-2V37-7H3G-55P8

ubuntu-cve-2026-67213

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature