CVE-2026-67214 (GCVE-0-2026-67214)

Vulnerability from cvelistv5 – Published: 2026-07-29 13:32 – Updated: 2026-10-08 15:24
VLAI
Title
nanoid Infinite Loop via Negative Size in non-secure module
Summary
nanoid (Nano ID) before 3.3.16 and 5.1.16 contains an infinite loop in the customAlphabet and nanoid functions of its non-secure module (nanoid/non-secure). When these functions are given a negative size, the loop counter is decremented from a negative value and never reaches its termination condition, spinning indefinitely and hanging the calling thread. An application that passes an unvalidated, attacker-controlled negative size 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 · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 14:37 UTC
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6903 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
nanoid_project nanoid Affected: 0 , < 5.1.16 (semver)
Unaffected: 5.1.16 (semver)
Affected: 0 , < 3.3.16 (semver)
Unaffected: 3.3.16 (semver)
    cpe:2.3:a:nanoid_project:nanoid:*:*:*:*:*:node.js:*:*
    cpe:2.3:a:nanoid_project:nanoid:*:*:*:*:*:node.js:*:*
Create a notification for this product.
Date Public
2026-06-24 00:00
Show details on NVD website
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          ],
          "title": "nanoid Infinite Loop via Negative Size in non-secure module",
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        "assignerShortName": "VulnCheck",
        "cveId": "CVE-2026-67214",
        "datePublished": "2026-07-29T13:32:02.265Z",
        "dateReserved": "2026-07-28T18:13:39.684Z",
        "dateUpdated": "2026-10-08T15:24:02.199Z",
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    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.
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  • 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.
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