Vulnerability-Lookup

GHSA-RVHF-6HHM-XG6W

Vulnerability from github – Published: 2026-10-22 15:32 – Updated: 2026-10-22 15:32

Details

crawlseo before version 0.2.4 contains a server-side request forgery vulnerability in its crawler engine where isPrivateIp() fails to block reserved IP ranges such as RFC 6598 Carrier-Grade NAT, RFC 6890, TEST-NET ranges and certain IPv6 addresses, and additionally fails to pin the validated address for the actual outbound connection, allowing a TOCTOU DNS rebinding bypass. An authenticated attacker can add a malicious domain that resolves to an internal or restricted address, trigger a crawl to reach internal services or cloud metadata endpoints like 169.254.169.254, and retrieve the fetched page's title, description, headings, status code and links through the crawl results API, enabling internal network reconnaissance.

Severity

5.0 (Medium)


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

5.3 (Medium)


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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-115411"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-22T14:17:39Z",
    "severity": "MODERATE"
  },
  "details": "crawlseo before version 0.2.4 contains a server-side request forgery vulnerability in its crawler engine where isPrivateIp() fails to block reserved IP ranges such as RFC 6598 Carrier-Grade NAT, RFC 6890, TEST-NET ranges and certain IPv6 addresses, and additionally fails to pin the validated address for the actual outbound connection, allowing a TOCTOU DNS rebinding bypass. An authenticated attacker can add a malicious domain that resolves to an internal or restricted address, trigger a crawl to reach internal services or cloud metadata endpoints like 169.254.169.254, and retrieve the fetched page\u0027s title, description, headings, status code and links through the crawl results API, enabling internal network reconnaissance.",
  "id": "GHSA-rvhf-6hhm-xg6w",
  "modified": "2026-10-22T15:32:49Z",
  "published": "2026-10-22T15:32:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-115411"
    },
    {
      "type": "WEB",
      "url": "https://github.com/crawlseo/crawlseo/commit/76e4e693de0c6b294cf1f60656800e47346f1c28"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/mansurmavlankulov/47cb8e183fec39a7afe599d1082a3399"
    },
    {
      "type": "WEB",
      "url": "https://github.com/crawlseo/crawlseo/releases?page=1#release-v0.2.4"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/crawlseo-before-server-side-request-forgery-via-crawler"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/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-2026-115411 (GCVE-0-2026-115411)

Vulnerability from cvelistv5 – Published: 2026-10-22 13:20 – Updated: 2026-10-22 13:20 X_Open Source

Title

crawlseo before 0.2.4 Server-Side Request Forgery via Crawler

Summary

Severity

5.3 (Medium)


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

5 (Medium)


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

CWE

CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 6762 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/crawlseo/crawlseo/commit/76e4e…	issue-tracking
https://github.com/crawlseo/crawlseo/releases?pag…	patch
https://gist.github.com/mansurmavlankulov/47cb8e1…	technical-description
https://www.vulncheck.com/advisories/crawlseo-bef…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
crawlseo	crawlseo	Affected: 0.1.0 , < 0.2.4 (semver) cpe:2.3:a:crawlseo:crawlseo::::::::

Date Public

2026-10-22 00:00

Credits

Mansurzhan Mavlankulov

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/crawlseo/crawlseo",
          "product": "crawlseo",
          "repo": "https://github.com/crawlseo/crawlseo",
          "vendor": "crawlseo",
          "versions": [
            {
              "lessThan": "0.2.4",
              "status": "affected",
              "version": "0.1.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:crawlseo:crawlseo:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "0.2.4",
                  "versionStartIncluding": "0.1.0",
                  "vulnerable": true
                }
              ],
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Mansurzhan Mavlankulov"
        }
      ],
      "datePublic": "2026-10-22T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "crawlseo before version 0.2.4 contains a server-side request forgery vulnerability in its crawler engine where isPrivateIp() fails to block reserved IP ranges such as RFC 6598 Carrier-Grade NAT, RFC 6890, TEST-NET ranges and certain IPv6 addresses, and additionally fails to pin the validated address for the actual outbound connection, allowing a TOCTOU DNS rebinding bypass. An authenticated attacker can add a malicious domain that resolves to an internal or restricted address, trigger a crawl to reach internal services or cloud metadata endpoints like 169.254.169.254, and retrieve the fetched page\u0027s title, description, headings, status code and links through the crawl results API, enabling internal network reconnaissance."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-918",
              "description": "Server-Side Request Forgery (SSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-22T13:20:01.875Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/crawlseo/crawlseo/commit/76e4e693de0c6b294cf1f60656800e47346f1c28"
        },
        {
          "name": "Vendor Patch",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/crawlseo/crawlseo/releases?page=1#release-v0.2.4"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://gist.github.com/mansurmavlankulov/47cb8e183fec39a7afe599d1082a3399"
        },
        {
          "name": "VulnCheck Advisory: crawlseo before 0.2.4 Server-Side Request Forgery via Crawler",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/crawlseo-before-server-side-request-forgery-via-crawler"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "tags": [
        "x_open-source"
      ],
      "title": "crawlseo before 0.2.4 Server-Side Request Forgery via Crawler",
      "x_generator": {
        "engine": "vulncheck"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-115411",
    "datePublished": "2026-10-22T13:20:01.875Z",
    "dateReserved": "2026-10-22T12:20:48.706Z",
    "dateUpdated": "2026-10-22T13:20:01.875Z",
    "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.

Vulnerability timeline

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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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