Vulnerability-Lookup

GHSA-HJ76-42VX-JWP4

Vulnerability from github – Published: 2026-01-21 15:41 – Updated: 2026-01-22 15:39

Summary

seroval Affected by Prototype Pollution via JSON Deserialization

Details

Due to improper input validation, a malicious object key can lead to prototype pollution during JSON deserialization. This affects only JSON deserialization functionality.

As there is no known workaround, please upgrade to the latest version.

Severity ?

7.3 (High)


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

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "seroval"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-23736"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1321"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-01-21T15:41:14Z",
    "nvd_published_at": "2026-01-21T23:15:52Z",
    "severity": "HIGH"
  },
  "details": "Due to improper input validation, a malicious object key can lead to prototype pollution during JSON deserialization.\nThis affects only JSON deserialization functionality.\n\nAs there is no known workaround, please upgrade to the latest version.",
  "id": "GHSA-hj76-42vx-jwp4",
  "modified": "2026-01-22T15:39:43Z",
  "published": "2026-01-21T15:41:14Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-hj76-42vx-jwp4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23736"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/lxsmnsyc/seroval"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "seroval Affected by Prototype Pollution via JSON Deserialization"
}

CVE-2026-23736 (GCVE-0-2026-23736)

Vulnerability from cvelistv5 – Published: 2026-01-21 23:01 – Updated: 2026-01-22 14:45

Title

seroval Affected by Prototype Pollution via JSON Deserialization

Summary

seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 1.4.0 and below, due to improper input validation, a malicious object key can lead to prototype pollution during JSON deserialization. This vulnerability affects only JSON deserialization functionality. This issue is fixed in version 1.4.1.

Severity ?

7.3 (High)


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

CWE

CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Assigner

GitHub_M

References

URL

Tags

	https://github.com/lxsmnsyc/seroval/security/advi…	x_refsource_CONFIRM
	https://github.com/lxsmnsyc/seroval/commit/ce9408…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	lxsmnsyc	seroval	Affected: < 1.4.1

Show details on NVD website

JSON

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        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-23736",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-22T14:45:46.259826Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
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        {
          "product": "seroval",
          "vendor": "lxsmnsyc",
          "versions": [
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.1"
          }
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      ],
      "problemTypes": [
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          "descriptions": [
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              "cweId": "CWE-1321",
              "description": "CWE-1321: Improperly Controlled Modification of Object Prototype Attributes (\u0027Prototype Pollution\u0027)",
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      "providerMetadata": {
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      "references": [
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          "name": "https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-hj76-42vx-jwp4",
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          ],
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        },
        {
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          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060"
        }
      ],
      "source": {
        "advisory": "GHSA-hj76-42vx-jwp4",
        "discovery": "UNKNOWN"
      },
      "title": "seroval Affected by Prototype Pollution via JSON Deserialization"
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  "cveMetadata": {
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    "datePublished": "2026-01-21T23:01:10.114Z",
    "dateReserved": "2026-01-15T15:45:01.957Z",
    "dateUpdated": "2026-01-22T14:45:53.950Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-HJ76-42VX-JWP4

CVE-2026-23736 (GCVE-0-2026-23736)

Tags

Sightings

Nomenclature