Vulnerability-Lookup

CVE-2022-35923 (GCVE-0-2022-35923)

Vulnerability from cvelistv5 – Published: 2022-08-02 20:10 – Updated: 2025-04-22 17:45

Title

Inefficient Regular Expression Complexity in v8n

Summary

v8n is a javascript validation library. Versions of v8n prior to 1.5.1 were found to have an inefficient regular expression complexity in the `lowercase()` and `uppercase()` regex which could lead to a denial of service attack. In testing of the `lowercase()` function a payload of 'a' + 'a'.repeat(i) + 'A' with 32 leading characters took 29443 ms to execute. The same issue happens with uppercase(). Users are advised to upgrade. There are no known workarounds for this issue.

Severity

7.5 (High)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-22 15:40 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/imbrn/v8n/security/advisories/…	x_refsource_CONFIRM
https://github.com/imbrn/v8n/commit/92393862156fa…	x_refsource_MISC
https://huntr.dev/bounties/2d92f644-593b-43b4-bfd…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
imbrn	v8n	Affected: < 1.5.1	guessed

Show details on NVD website

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  }
}

FKIE_CVE-2022-35923

Vulnerability from fkie_nvd - Published: 2022-08-02 20:15 - Updated: 2026-06-17 04:52

Severity

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

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9	Patch, Third Party Advisory
security-advisories@github.com	https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9	Third Party Advisory
security-advisories@github.com	https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/	Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/	Exploit, Third Party Advisory

Impacted products

	Vendor	Product	Version
	v8n_project	v8n	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "v8n",
          "vendor": "imbrn",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.5.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:v8n_project:v8n:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "756E657C-AD87-49ED-B83B-5BD406633992",
              "versionEndExcluding": "1.5.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "v8n is a javascript validation library. Versions of v8n prior to 1.5.1 were found to have an inefficient regular expression complexity in the `lowercase()` and `uppercase()` regex which could lead to a denial of service attack. In testing of the `lowercase()` function a payload of \u0027a\u0027 + \u0027a\u0027.repeat(i) + \u0027A\u0027 with 32 leading characters took 29443 ms to execute. The same issue happens with uppercase(). Users are advised to upgrade. There are no known workarounds for this issue."
    },
    {
      "lang": "es",
      "value": "v8n es una biblioteca de comprobaci\u00f3n de javascript. Las versiones de v8n anteriores a 1.5.1, presentaban una complejidad de expresi\u00f3n regular ineficiente en las expresiones regulares \"lowercase()\" y \"uppercase()\" que pod\u00eda conllevar a un ataque de denegaci\u00f3n de servicio. En las pruebas de la funci\u00f3n \"lowercase()\" una carga \u00fatil de \"a\" + \"a\".repeat(i) + \"A\" con 32 caracteres iniciales tardaba 29443 ms en ejecutarse. El mismo problema ocurre con uppercase(). Es recomendado a usuarios actualizar. No se presentan mitigaciones conocidas para este problema"
    }
  ],
  "id": "CVE-2022-35923",
  "lastModified": "2026-06-17T04:52:31.823",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
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          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
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        "ssvcData": {
          "id": "CVE-2022-35923",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-04-22T15:40:02.652401Z",
          "version": "2.0.3"
        }
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  "published": "2022-08-02T20:15:09.947",
  "references": [
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      "source": "security-advisories@github.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9"
    },
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    },
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    },
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      "url": "https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9"
    },
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      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/"
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  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1333"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-XRX9-GJ26-5WX9

Vulnerability from github – Published: 2022-10-07 07:33 – Updated: 2022-10-07 07:33

Summary

v8n vulnerable to Inefficient Regular Expression Complexity

Details

Impact

Inefficient regular expression complexity of lowercase() and uppercase() regex could lead to a denial of service attack. With a formed payload 'a' + 'a'.repeat(i) + 'A', only 32 characters payload could take 29443 ms time execution when testing lowercase(). The same issue happens with uppercase().

Patches

v1.5.1

References

huntr.dev report Regular Expression Denial of Service (ReDoS) and Catastrophic Backtracking

For more information

If you have any questions or comments about this advisory: * Open an issue in v8n issues list * Email us at brunodev02221@gmail.com

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "v8n"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.5.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-35923"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333",
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-10-07T07:33:44Z",
    "nvd_published_at": "2022-08-02T20:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nInefficient regular expression complexity of `lowercase()` and `uppercase()` regex could lead to a denial of service attack. With a formed payload `\u0027a\u0027 + \u0027a\u0027.repeat(i) + \u0027A\u0027`, only 32 characters payload could take 29443 ms time execution when testing `lowercase()`. The same issue happens with `uppercase()`.\n\n### Patches\nv1.5.1\n\n### References\n[huntr.dev report](https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609)\n[_Regular Expression Denial of Service (ReDoS) and Catastrophic Backtracking_](https://snyk.io/blog/redos-and-catastrophic-backtracking/)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [v8n issues list](https://github.com/imbrn/v8n)\n* Email us at [brunodev02221@gmail.com](mailto:brunodev02221@gmail.com)\n",
  "id": "GHSA-xrx9-gj26-5wx9",
  "modified": "2022-10-07T07:33:44Z",
  "published": "2022-10-07T07:33:44Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-35923"
    },
    {
      "type": "WEB",
      "url": "https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/imbrn/v8n"
    },
    {
      "type": "WEB",
      "url": "https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "v8n vulnerable to Inefficient Regular Expression Complexity"
}

GSD-2022-35923

Vulnerability from gsd - Updated: 2023-12-13 01:19

Details

Aliases

CVE-2022-35923

Aliases

CVE-2022-35923

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2022-35923",
    "description": "v8n is a javascript validation library. Versions of v8n prior to 1.5.1 were found to have an inefficient regular expression complexity in the `lowercase()` and `uppercase()` regex which could lead to a denial of service attack. In testing of the `lowercase()` function a payload of \u0027a\u0027 + \u0027a\u0027.repeat(i) + \u0027A\u0027 with 32 leading characters took 29443 ms to execute. The same issue happens with uppercase(). Users are advised to upgrade. There are no known workarounds for this issue.",
    "id": "GSD-2022-35923"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2022-35923"
      ],
      "details": "v8n is a javascript validation library. Versions of v8n prior to 1.5.1 were found to have an inefficient regular expression complexity in the `lowercase()` and `uppercase()` regex which could lead to a denial of service attack. In testing of the `lowercase()` function a payload of \u0027a\u0027 + \u0027a\u0027.repeat(i) + \u0027A\u0027 with 32 leading characters took 29443 ms to execute. The same issue happens with uppercase(). Users are advised to upgrade. There are no known workarounds for this issue.",
      "id": "GSD-2022-35923",
      "modified": "2023-12-13T01:19:33.794363Z",
      "schema_version": "1.4.0"
    }
  },
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        "ID": "CVE-2022-35923",
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        "TITLE": "Inefficient Regular Expression Complexity in v8n"
      },
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            {
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                    "version": {
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          "attackVector": "NETWORK",
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            "name": "https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9",
            "refsource": "CONFIRM",
            "url": "https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9"
          },
          {
            "name": "https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9",
            "refsource": "MISC",
            "url": "https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9"
          },
          {
            "name": "https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/",
            "refsource": "MISC",
            "url": "https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-xrx9-gj26-5wx9",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c1.5.1",
          "affected_versions": "All versions before 1.5.1",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-1333",
            "CWE-937"
          ],
          "date": "2023-07-21",
          "description": "v8n is a javascript validation library. Versions of v8n prior to 1.5.1 were found to have an inefficient regular expression complexity in the `lowercase()` and `uppercase()` regex which could lead to a denial of service attack. In testing of the `lowercase()` function a payload of \u0027a\u0027 + \u0027a\u0027.repeat(i) + \u0027A\u0027 with 32 leading characters took 29443 ms to execute. The same issue happens with uppercase(). Users are advised to upgrade. There are no known workarounds for this issue.",
          "fixed_versions": [
            "1.5.1"
          ],
          "identifier": "CVE-2022-35923",
          "identifiers": [
            "CVE-2022-35923",
            "GHSA-xrx9-gj26-5wx9"
          ],
          "not_impacted": "All versions starting from 1.5.1",
          "package_slug": "npm/v8n",
          "pubdate": "2022-08-02",
          "solution": "Upgrade to version 1.5.1 or above.",
          "title": "Inefficient Regular Expression Complexity",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2022-35923",
            "https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9",
            "https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9",
            "https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/"
          ],
          "uuid": "6b082646-cd59-4ba0-b061-02aabbff3a5a"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:v8n_project:v8n:*:*:*:*:*:node.js:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.5.1",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2022-35923"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "v8n is a javascript validation library. Versions of v8n prior to 1.5.1 were found to have an inefficient regular expression complexity in the `lowercase()` and `uppercase()` regex which could lead to a denial of service attack. In testing of the `lowercase()` function a payload of \u0027a\u0027 + \u0027a\u0027.repeat(i) + \u0027A\u0027 with 32 leading characters took 29443 ms to execute. The same issue happens with uppercase(). Users are advised to upgrade. There are no known workarounds for this issue."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-1333"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9"
            },
            {
              "name": "https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9"
            },
            {
              "name": "https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2023-07-21T20:49Z",
      "publishedDate": "2022-08-02T20:15Z"
    }
  }
}

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.

Action not permitted

CVE-2022-35923 (GCVE-0-2022-35923)

FKIE_CVE-2022-35923

GHSA-XRX9-GJ26-5WX9

Impact

Patches

References

For more information

GSD-2022-35923

Tags

Sightings

Nomenclature

Related by attack behaviour