Vulnerability-Lookup

CNVD-2025-22697

Vulnerability from cnvd - Published: 2025-09-26

Title

FileBrowser拒绝服务漏洞

Description

FileBrowser是开源的一款网页文件浏览器。提供指定目录下的文件管理界面，可用于上传、删除、预览、重命名和编辑您的文件。 FileBrowser存在拒绝服务漏洞，该漏洞源于文件处理逻辑存在缺陷，攻击者可利用该漏洞导致拒绝服务。

Severity

低

Formal description

目前没有详细解决方案提供： https://github.com/filebrowser/filebrowser/releases

Reference

https://nvd.nist.gov/vuln/detail/CVE-2025-53893

Impacted products

Name
filebrowser filebrowser 2.38.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2025-53893",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-53893"
    }
  },
  "description": "FileBrowser\u662f\u5f00\u6e90\u7684\u4e00\u6b3e\u7f51\u9875\u6587\u4ef6\u6d4f\u89c8\u5668\u3002\u63d0\u4f9b\u6307\u5b9a\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\u7ba1\u7406\u754c\u9762\uff0c\u53ef\u7528\u4e8e\u4e0a\u4f20\u3001\u5220\u9664\u3001\u9884\u89c8\u3001\u91cd\u547d\u540d\u548c\u7f16\u8f91\u60a8\u7684\u6587\u4ef6\u3002\n\nFileBrowser\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u6587\u4ef6\u5904\u7406\u903b\u8f91\u5b58\u5728\u7f3a\u9677\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u89e3\u51b3\u65b9\u6848\u63d0\u4f9b\uff1a\r\nhttps://github.com/filebrowser/filebrowser/releases",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2025-22697",
  "openTime": "2025-09-26",
  "products": {
    "product": "filebrowser filebrowser 2.38.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2025-53893",
  "serverity": "\u4f4e",
  "submitTime": "2025-07-30",
  "title": "FileBrowser\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2025-53893 (GCVE-0-2025-53893)

Vulnerability from cvelistv5 – Published: 2025-07-15 17:47 – Updated: 2025-07-15 18:44

Title

File Browser Vulnerable to Uncontrolled Memory Consumption Due to Oversized File Processing

Summary

File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename, and edit files. In version 2.38.0, a Denial of Service (DoS) vulnerability exists in the file processing logic when reading a file on endpoint `Filebrowser-Server-IP:PORT/files/{file-name}` . While the server correctly handles and stores uploaded files, it attempts to load the entire content into memory during read operations without size checks or resource limits. This allows an authenticated user to upload a large file and trigger uncontrolled memory consumption on read, potentially crashing the server and making it unresponsive. As of time of publication, no known patches are available.

Severity

7.7 (High)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-07-15 18:44 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption
CWE-789 - Memory Allocation with Excessive Size Value

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7763 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/filebrowser/filebrowser/securi…	x_refsource_CONFIRM
https://github.com/filebrowser/filebrowser/issues/5294	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
filebrowser	filebrowser	Affected: = 2.38.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-53893",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-07-15T18:44:10.358867Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-07-15T18:44:39.994Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "filebrowser",
          "vendor": "filebrowser",
          "versions": [
            {
              "status": "affected",
              "version": "= 2.38.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename, and edit files. In version 2.38.0, a Denial of Service (DoS) vulnerability exists in the file processing logic when reading a file on endpoint  `Filebrowser-Server-IP:PORT/files/{file-name}` . While the server correctly handles and stores uploaded files, it attempts to load the entire content into memory during read operations without size checks or resource limits. This allows an authenticated user to upload a large file and trigger uncontrolled memory consumption on read, potentially crashing the server and making it unresponsive. As of time of publication, no known patches are available."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-789",
              "description": "CWE-789: Memory Allocation with Excessive Size Value",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-15T17:47:30.856Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7xqm-7738-642x",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7xqm-7738-642x"
        },
        {
          "name": "https://github.com/filebrowser/filebrowser/issues/5294",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/filebrowser/filebrowser/issues/5294"
        }
      ],
      "source": {
        "advisory": "GHSA-7xqm-7738-642x",
        "discovery": "UNKNOWN"
      },
      "title": "File Browser Vulnerable to Uncontrolled Memory Consumption Due to Oversized File Processing"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-53893",
    "datePublished": "2025-07-15T17:47:30.856Z",
    "dateReserved": "2025-07-11T19:05:23.825Z",
    "dateUpdated": "2025-07-15T18:44:39.994Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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