Vulnerability-Lookup

GHSA-PGC8-G7Q5-FQ5M

Vulnerability from github – Published: 2026-02-01 15:32 – Updated: 2026-02-01 15:32

Details

Simple CMS 2.1 contains a persistent cross-site scripting vulnerability in user input parameters that allows remote attackers to inject malicious script code. Attackers can exploit the newUser and editUser modules to inject persistent scripts that execute on user list preview, potentially leading to session hijacking and application manipulation.

Severity ?

6.4 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47917"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-01T13:15:56Z",
    "severity": "MODERATE"
  },
  "details": "Simple CMS 2.1 contains a persistent cross-site scripting vulnerability in user input parameters that allows remote attackers to inject malicious script code. Attackers can exploit the newUser and editUser modules to inject persistent scripts that execute on user list preview, potentially leading to session hijacking and application manipulation.",
  "id": "GHSA-pgc8-g7q5-fq5m",
  "modified": "2026-02-01T15:32:31Z",
  "published": "2026-02-01T15:32:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47917"
    },
    {
      "type": "WEB",
      "url": "https://simplephpscripts.com/simple-cms-php"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/simple-cms-persistent-cross-site-scripting-via-user-input-parameters"
    },
    {
      "type": "WEB",
      "url": "https://www.vulnerability-lab.com/get_content.php?id=2302"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/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-2021-47917 (GCVE-0-2021-47917)

Vulnerability from cvelistv5 – Published: 2026-02-01 12:15 – Updated: 2026-02-02 18:05

Title

Simple CMS 2.1 Persistent Cross-Site Scripting via User Input Parameters

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

6.4 (Medium)


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

CWE

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

Assigner

VulnCheck

References

URL

Tags

	https://www.vulnerability-lab.com/get_content.php…	exploit
	https://simplephpscripts.com/simple-cms-php	product
	https://www.vulncheck.com/advisories/simple-cms-p…	third-party-advisory

Impacted products

	Vendor	Product	Version
	Simplephpscripts	Simple CMS	Affected: 2.1

Credits

Vulnerability-Lab [Research Team]

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47917",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-02T18:05:46.031250Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-02T18:05:53.672Z",
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          "shortName": "CISA-ADP"
        },
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    ],
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          "defaultStatus": "unaffected",
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          "vendor": "Simplephpscripts",
          "versions": [
            {
              "status": "affected",
              "version": "2.1"
            }
          ]
        }
      ],
      "credits": [
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          "lang": "en",
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          "value": "Vulnerability-Lab [Research Team]"
        }
      ],
      "datePublic": "2021-10-18T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Simple CMS 2.1 contains a persistent cross-site scripting vulnerability in user input parameters that allows remote attackers to inject malicious script code. Attackers can exploit the newUser and editUser modules to inject persistent scripts that execute on user list preview, potentially leading to session hijacking and application manipulation."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
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            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "format": "CVSS"
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      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
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              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2026-02-01T12:15:50.031Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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      "references": [
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          "name": "Vulnerability Lab Advisory",
          "tags": [
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          ],
          "url": "https://www.vulnerability-lab.com/get_content.php?id=2302"
        },
        {
          "name": "Product Homepage",
          "tags": [
            "product"
          ],
          "url": "https://simplephpscripts.com/simple-cms-php"
        },
        {
          "name": "VulnCheck Advisory: Simple CMS 2.1 Persistent Cross-Site Scripting via User Input Parameters",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/simple-cms-persistent-cross-site-scripting-via-user-input-parameters"
        }
      ],
      "title": "Simple CMS 2.1 Persistent Cross-Site Scripting via User Input Parameters",
      "x_generator": {
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2021-47917",
    "datePublished": "2026-02-01T12:15:50.031Z",
    "dateReserved": "2026-02-01T11:24:18.714Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

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-PGC8-G7Q5-FQ5M

CVE-2021-47917 (GCVE-0-2021-47917)

Tags

Sightings

Nomenclature