Vulnerability-Lookup

GHSA-64X7-M7RH-9M83

Vulnerability from github – Published: 2025-06-17 21:32 – Updated: 2025-06-20 14:12

Summary

Withdrawn Advisory: microlight.js has a null pointer dereference vulnerability

Details

Withdrawn Advisory

This advisory has been withdrawn because a website owner has to set CSS color values. The proof of concept doesn't demonstrate how a malicious user who is not the website owner can cause an application crash. This link has been maintained to preserve external references.

Original Description

A null pointer dereference vulnerability was discovered in microlight.js (version 0.0.7), a lightweight syntax highlighting library. When processing elements with non-standard CSS color values, the library fails to validate the result of a regular expression match before accessing its properties, leading to an uncaught TypeError and potential application crash.

Severity ?

1.2 (Low)


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

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "microlight"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.0.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-45525"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-06-17T22:36:31Z",
    "nvd_published_at": "2025-06-17T20:15:32Z",
    "severity": "LOW"
  },
  "details": "## Withdrawn Advisory\nThis advisory has been withdrawn because a website owner has to set CSS color values. The proof of concept doesn\u0027t demonstrate how a malicious user who is not the website owner can cause an application crash. This link has been maintained to preserve external references.\n\n## Original Description\nA null pointer dereference vulnerability was discovered in microlight.js (version 0.0.7), a lightweight syntax highlighting library. When processing elements with non-standard CSS color values, the library fails to validate the result of a regular expression match before accessing its properties, leading to an uncaught TypeError and potential application crash.",
  "id": "GHSA-64x7-m7rh-9m83",
  "modified": "2025-06-20T14:12:44Z",
  "published": "2025-06-17T21:32:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-45525"
    },
    {
      "type": "WEB",
      "url": "https://github.com/github/advisory-database/pull/5730"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/Rootingg/843368931f70886bed3cf982f10a4424"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/asvd/microlight"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Withdrawn Advisory: microlight.js has a null pointer dereference vulnerability",
  "withdrawn": "2025-06-18T18:46:37Z"
}

CVE-2025-45525 (GCVE-0-2025-45525)

Vulnerability from cvelistv5 – Published: 2025-06-17 00:00 – Updated: 2025-08-26 18:51 Disputed

Summary

A NULL pointer dereference vulnerability has been identified in the JavaScript library microlight version 0.0.7, a lightweight syntax highlighting library. When processing elements with non-standard CSS color values, the library fails to validate the result of a regular expression match before accessing its properties, leading to an uncaught TypeError and potential application crash. NOTE: this is disputed by multiple parties because there is no common scenario in which an adversary can insert those non-standard values.

Severity ?

2.9 (Low)


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

CWE

CWE-476 - NULL Pointer Dereference

Assigner

mitre

References

URL

Tags

	https://gist.github.com/Rootingg/843368931f70886b…
	https://github.com/github/advisory-database/pull/5730

Impacted products

	Vendor	Product	Version
	asvd	microlight	Affected: 0 , ≤ 0.0.7 (semver)

Show details on NVD website

JSON

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        "metrics": [
          {
            "other": {
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                "id": "CVE-2025-45525",
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                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-06-18T13:20:58.473400Z",
                "version": "2.0.3"
              },
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        ],
        "providerMetadata": {
          "dateUpdated": "2025-08-26T18:51:45.895Z",
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          "shortName": "CISA-ADP"
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    ],
    "cna": {
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        {
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          "vendor": "asvd",
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      ],
      "descriptions": [
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 2.9,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
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          }
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  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2025-45525",
    "datePublished": "2025-06-17T00:00:00.000Z",
    "dateReserved": "2025-04-22T00:00:00.000Z",
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  "dataType": "CVE_RECORD",
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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.

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