Vulnerability-Lookup

GHSA-38VF-G5J6-X7WV

Vulnerability from github – Published: 2026-01-16 21:30 – Updated: 2026-01-16 21:30

Details

StudyMD 0.3.2 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts into markdown files. Attackers can upload crafted markdown files with embedded JavaScript payloads that execute when the file is opened, potentially enabling remote code execution.

Severity

7.2 (High)


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

5.1 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47842"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-16T19:16:10Z",
    "severity": "MODERATE"
  },
  "details": "StudyMD 0.3.2 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts into markdown files. Attackers can upload crafted markdown files with embedded JavaScript payloads that execute when the file is opened, potentially enabling remote code execution.",
  "id": "GHSA-38vf-g5j6-x7wv",
  "modified": "2026-01-16T21:30:37Z",
  "published": "2026-01-16T21:30:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47842"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jotron/StudyMD"
    },
    {
      "type": "WEB",
      "url": "https://imgur.com/a/lDHKEIp"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/49832"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/studymd-persistent-cross-site-scripting"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2021-47842 (GCVE-0-2021-47842)

Vulnerability from cvelistv5 – Published: 2026-01-16 19:09 – Updated: 2026-01-16 21:09

Title

StudyMD 0.3.2 - Persistent Cross-Site Scripting

Summary

Severity

5.1 (Medium)


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

7.2 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

VulnCheck

References

4 references

URL	Tags
https://www.exploit-db.com/exploits/49832	exploit
https://github.com/jotron/StudyMD	product
https://imgur.com/a/lDHKEIp	exploit
https://www.vulncheck.com/advisories/studymd-pers…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
jotron	StudyMD	Affected: 0.3.2

Date Public

2021-04-05 00:00

Credits

TaurusOmar

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47842",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-16T20:59:41.827691Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-16T21:09:21.414Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://www.vulncheck.com/advisories/studymd-persistent-cross-site-scripting"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "StudyMD",
          "vendor": "jotron",
          "versions": [
            {
              "status": "affected",
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            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "TaurusOmar"
        }
      ],
      "datePublic": "2021-04-05T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
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            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
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            "subConfidentialityImpact": "LOW",
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            "vulnAvailabilityImpact": "NONE",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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        {
          "cvssV3_1": {
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            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
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              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2026-01-16T19:09:39.451Z",
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      "references": [
        {
          "name": "ExploitDB-49832",
          "tags": [
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          ],
          "url": "https://www.exploit-db.com/exploits/49832"
        },
        {
          "name": "StudyMD GitHub Repository",
          "tags": [
            "product"
          ],
          "url": "https://github.com/jotron/StudyMD"
        },
        {
          "name": "Proof of Concept Video",
          "tags": [
            "exploit"
          ],
          "url": "https://imgur.com/a/lDHKEIp"
        },
        {
          "name": "VulnCheck Advisory: StudyMD 0.3.2 - Persistent Cross-Site Scripting",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/studymd-persistent-cross-site-scripting"
        }
      ],
      "title": "StudyMD 0.3.2 - Persistent Cross-Site Scripting",
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  "cveMetadata": {
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    "datePublished": "2026-01-16T19:09:39.451Z",
    "dateReserved": "2026-01-14T17:11:19.902Z",
    "dateUpdated": "2026-01-16T21:09:21.414Z",
    "state": "PUBLISHED"
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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.

Action not permitted

GHSA-38VF-G5J6-X7WV

CVE-2021-47842 (GCVE-0-2021-47842)

Tags

Sightings

Nomenclature