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CNVD-2026-02639

Vulnerability from cnvd - Published: 2026-01-08

Title

CMSimple_XH代码执行漏洞

Description

CMSimple_XH是一个基于PHP的内容管理系统，它源自原始的CMSimple项目，属于其分支版本。 CMSimple_XH存在代码执行漏洞，该漏洞源于内容编辑功能在处理用户提交的数据时未对代码输入进行安全限制或过滤。攻击者可利用该漏洞将后门或web shell写入服务器并执行任意命令。

Severity

高

Patch Name

CMSimple_XH代码执行漏洞的补丁

Patch Description

CMSimple_XH是一个基于PHP的内容管理系统，它源自原始的CMSimple项目，属于其分支版本。 CMSimple_XH存在代码执行漏洞，该漏洞源于内容编辑功能在处理用户提交的数据时未对代码输入进行安全限制或过滤。攻击者可利用该漏洞将后门或web shell写入服务器并执行任意命令。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

目前厂商已发布升级程序修复该安全问题，详情见厂商官网: https://www.cmsimple-xh.org/?Downloads

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-47736

Impacted products

Name
CMSimple_XH CMSimple_XH 1.7.4

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-47736",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-47736"
    }
  },
  "description": "CMSimple_XH\u662f\u4e00\u4e2a\u57fa\u4e8ePHP\u7684\u5185\u5bb9\u7ba1\u7406\u7cfb\u7edf\uff0c\u5b83\u6e90\u81ea\u539f\u59cb\u7684CMSimple\u9879\u76ee\uff0c\u5c5e\u4e8e\u5176\u5206\u652f\u7248\u672c\u3002\n\nCMSimple_XH\u5b58\u5728\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5185\u5bb9\u7f16\u8f91\u529f\u80fd\u5728\u5904\u7406\u7528\u6237\u63d0\u4ea4\u7684\u6570\u636e\u65f6\u672a\u5bf9\u4ee3\u7801\u8f93\u5165\u8fdb\u884c\u5b89\u5168\u9650\u5236\u6216\u8fc7\u6ee4\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5c06\u540e\u95e8\u6216web shell\u5199\u5165\u670d\u52a1\u5668\u5e76\u6267\u884c\u4efb\u610f\u547d\u4ee4\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u7a0b\u5e8f\u4fee\u590d\u8be5\u5b89\u5168\u95ee\u9898\uff0c\u8be6\u60c5\u89c1\u5382\u5546\u5b98\u7f51:\r\nhttps://www.cmsimple-xh.org/?Downloads",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-02639",
  "openTime": "2026-01-08",
  "patchDescription": "CMSimple_XH\u662f\u4e00\u4e2a\u57fa\u4e8ePHP\u7684\u5185\u5bb9\u7ba1\u7406\u7cfb\u7edf\uff0c\u5b83\u6e90\u81ea\u539f\u59cb\u7684CMSimple\u9879\u76ee\uff0c\u5c5e\u4e8e\u5176\u5206\u652f\u7248\u672c\u3002\r\n\r\nCMSimple_XH\u5b58\u5728\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5185\u5bb9\u7f16\u8f91\u529f\u80fd\u5728\u5904\u7406\u7528\u6237\u63d0\u4ea4\u7684\u6570\u636e\u65f6\u672a\u5bf9\u4ee3\u7801\u8f93\u5165\u8fdb\u884c\u5b89\u5168\u9650\u5236\u6216\u8fc7\u6ee4\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5c06\u540e\u95e8\u6216web shell\u5199\u5165\u670d\u52a1\u5668\u5e76\u6267\u884c\u4efb\u610f\u547d\u4ee4\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "CMSimple_XH\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "CMSimple_XH CMSimple_XH 1.7.4"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-47736",
  "serverity": "\u9ad8",
  "submitTime": "2025-12-29",
  "title": "CMSimple_XH\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e"
}

CVE-2021-47736 (GCVE-0-2021-47736)

Vulnerability from cvelistv5 – Published: 2025-12-23 19:34 – Updated: 2026-07-15 01:24

Title

CMSimple_XH 1.7.4 Authenticated Remote Code Execution via Content Editing

Summary

CMSimple_XH 1.7.4 contains an authenticated remote code execution vulnerability in the content editing functionality that allows administrative users to upload malicious PHP files. Attackers with valid credentials can exploit the CSRF token mechanism to create a PHP shell file that enables arbitrary command execution on the server.

Severity

8.6 (High)


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

7.2 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-12-23 21:24 UTC

CWE

CWE-94 - Improper Control of Generation of Code ('Code Injection')

Assigner

VulnCheck mitre root

References

3 references

URL	Tags
https://www.exploit-db.com/exploits/50367	exploit
https://www.cmsimple-xh.org/	product
https://www.vulncheck.com/advisories/cmsimplexh-a…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Cmsimple-Xh	CMSimple_XH	Affected: 1.7.4 cpe:2.3:a:cmsimple-xh:cmsimple_xh:1.7.4:::::::*

Date Public

2021-10-01 00:00

Credits

Halit AKAYDIN (hLtAkydn)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47736",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-23T21:24:41.320606Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-12-23T21:24:49.156Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "product": "CMSimple_XH",
          "vendor": "Cmsimple-Xh",
          "versions": [
            {
              "status": "affected",
              "version": "1.7.4"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Halit AKAYDIN (hLtAkydn)"
        }
      ],
      "datePublic": "2021-10-01T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "CMSimple_XH 1.7.4 contains an authenticated remote code execution vulnerability in the content editing functionality that allows administrative users to upload malicious PHP files. Attackers with valid credentials can exploit the CSRF token mechanism to create a PHP shell file that enables arbitrary command execution on the server."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
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            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "HIGH",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "format": "CVSS"
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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            "version": "3.1"
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      "problemTypes": [
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          "descriptions": [
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              "cweId": "CWE-94",
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              "lang": "en",
              "type": "CWE"
            }
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      "providerMetadata": {
        "dateUpdated": "2026-07-15T01:24:34.800Z",
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          "name": "ExploitDB-50367",
          "tags": [
            "exploit"
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          "url": "https://www.exploit-db.com/exploits/50367"
        },
        {
          "name": "Official Vendor Homepage",
          "tags": [
            "product"
          ],
          "url": "https://www.cmsimple-xh.org/"
        },
        {
          "name": "VulnCheck Advisory: CMSimple_XH 1.7.4 Authenticated Remote Code Execution via Content Editing",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/cmsimplexh-authenticated-remote-code-execution-via-content-editing"
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      "title": "CMSimple_XH 1.7.4 Authenticated Remote Code Execution via Content Editing",
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    "dateReserved": "2025-12-23T13:24:04.579Z",
    "dateUpdated": "2026-07-15T01:24:34.800Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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.
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CNVD-2026-02639

CVE-2021-47736 (GCVE-0-2021-47736)

Tags

Sightings

Nomenclature

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