Vulnerability-Lookup

CVE-2026-48038 (GCVE-0-2026-48038)

Vulnerability from cvelistv5 – Published: 2026-07-14 19:24 – Updated: 2026-07-15 13:27

Title

joi: Uncaught RangeError on deeply nested input through recursive `link()` schemas

Summary

joi is a schema description language and data validator for JavaScript. Prior to 17.13.4 and 18.2.1, denial of service is possible via an untrapped exception in services validating user-supplied JSON or object input with recursive link() schemas. When validate() is called without try/catch in a request handler, deeply nested input can trigger an unhandled RangeError and potentially crash the process; lower-impact paths using validateAsync() or try/catch produce a RangeError instead of a structured ValidationError. This issue is fixed in versions 17.13.4 and 18.2.1.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-15 13:23 UTC

CWE

CWE-248 - Uncaught Exception

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/hapijs/joi/security/advisories…	x_refsource_CONFIRM
https://github.com/hapijs/joi/pull/3113	x_refsource_MISC
https://github.com/hapijs/joi/commit/97bd51de94d5…	x_refsource_MISC
https://github.com/hapijs/joi/commit/fc146a628ab9…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
hapijs	joi	Affected: < 17.13.4 Affected: >= 18.0.0, < 18.2.1	guessed

Show details on NVD website

JSON

To clipboard

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      "status": "final",
      "title": "joi: joi: Denial of Service via uncaught RangeError on deeply nested input through recursive link() schemas",
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FKIE_CVE-2026-48038

Vulnerability from fkie_nvd - Published: 2026-07-14 20:17 - Updated: 2026-07-15 20:22

Severity

5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/hapijs/joi/commit/97bd51de94d595a2d8949eb3bec0dbdd2f8a7a74
	security-advisories@github.com	https://github.com/hapijs/joi/commit/fc146a628ab9cc250854407722d9f8738c9548e7
	security-advisories@github.com	https://github.com/hapijs/joi/pull/3113
	security-advisories@github.com	https://github.com/hapijs/joi/security/advisories/GHSA-q7cg-457f-vx79

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "joi",
          "vendor": "hapijs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 17.13.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 18.0.0, \u003c 18.2.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "joi is a schema description language and data validator for JavaScript. Prior to 17.13.4 and 18.2.1, denial of service is possible via an untrapped exception in services validating user-supplied JSON or object input with recursive link() schemas. When validate() is called without try/catch in a request handler, deeply nested input can trigger an unhandled RangeError and potentially crash the process; lower-impact paths using validateAsync() or try/catch produce a RangeError instead of a structured ValidationError. This issue is fixed in versions 17.13.4 and 18.2.1."
    }
  ],
  "id": "CVE-2026-48038",
  "lastModified": "2026-07-15T20:22:55.353",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "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:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        }
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    ]
  },
  "published": "2026-07-14T20:17:05.563",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/hapijs/joi/commit/97bd51de94d595a2d8949eb3bec0dbdd2f8a7a74"
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GHSA-Q7CG-457F-VX79

Vulnerability from github – Published: 2026-06-11 13:27 – Updated: 2026-06-12 19:28

Summary

joi has an uncaught RangeError on deeply nested input through recursive `link()` schemas

Details

Impact

Denial of service via untrapped exception in services validating user-supplied JSON / object input with recursive link schemas.

The blast radius depends on how the application invokes joi: - Highest impact: validate() called without try/catch in a request handler would cause an unhandled exception, potentially crashing the process. - Lower impact: validateAsync() or validate() inside a try/catch, the validation fails, but the error type is RangeError rather than a structured ValidationError, complicating error handling.

Patches

Upgrade to version >= 18.2.1.

Workarounds

Try/catch the validation to avoid uncaught exceptions.

References

Pull request: hapijs/joi#3113

Severity

5.3 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "joi"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "18.0.0"
            },
            {
              "fixed": "18.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "joi"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "17.13.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-48038"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-248",
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-11T13:27:32Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\nDenial of service via untrapped exception in services validating user-supplied JSON / object input with recursive link schemas. \n\nThe blast radius depends on how the application invokes joi:\n- Highest impact: `validate()` called without `try/catch` in a request handler would cause an unhandled exception, potentially crashing the process.\n- Lower impact: `validateAsync()` or `validate()` inside a `try/catch`, the validation fails, but the error type is `RangeError` rather than a structured `ValidationError`, complicating error handling.\n\n### Patches\nUpgrade to version \u003e= 18.2.1.\n\n### Workarounds\nTry/catch the validation to avoid uncaught exceptions.\n\n### References\n- Pull request: hapijs/joi#3113",
  "id": "GHSA-q7cg-457f-vx79",
  "modified": "2026-06-12T19:28:27Z",
  "published": "2026-06-11T13:27:32Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/hapijs/joi/security/advisories/GHSA-q7cg-457f-vx79"
    },
    {
      "type": "WEB",
      "url": "https://github.com/hapijs/joi/pull/3113"
    },
    {
      "type": "WEB",
      "url": "https://github.com/hapijs/joi/commit/2392713d3e9dd91ba752ac0c96e0eaf3d24b9a11"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/hapijs/joi"
    }
  ],
  "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:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "joi has an uncaught RangeError on deeply nested input through recursive `link()` schemas"
}

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-2026-48038 (GCVE-0-2026-48038)

FKIE_CVE-2026-48038

GHSA-Q7CG-457F-VX79

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Related by attack behaviour