CVE-2025-8267 (GCVE-0-2025-8267)

Vulnerability from cvelistv5 – Published: 2025-07-28 05:00 – Updated: 2025-07-28 16:01

Summary

Versions of the package ssrfcheck before 1.2.0 are vulnerable to Server-Side Request Forgery (SSRF) due to an incomplete denylist of IP address ranges. Specifically, the package fails to classify the reserved IP address space 224.0.0.0/4 (Multicast) as invalid. This oversight allows attackers to craft requests targeting these multicast addresses.

Severity

8.2 (High)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-07-28 16:01 UTC

CWE

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

Assigner

snyk mitre root

References

4 references

URL	Tags
https://security.snyk.io/vuln/SNYK-JS-SSRFCHECK-9510756
https://gist.github.com/lirantal/2976840639df824c…
https://github.com/felippe-regazio/ssrfcheck/issues/5
https://github.com/felippe-regazio/ssrfcheck/comm…

Impacted products

1 product

Vendor	Product	Version	CPE status
n/a	ssrfcheck	Affected: 0 , < 1.2.0 (semver)

Credits

Liran Tal

Show details on NVD website

JSON

To clipboard

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    "redhat_vex": {
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      "product_status:known_not_affected": "1",
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}

FKIE_CVE-2025-8267

Vulnerability from fkie_nvd - Published: 2025-07-28 05:16 - Updated: 2026-06-17 10:06

Severity

8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Summary

References

URL	Tags
report@snyk.io	https://gist.github.com/lirantal/2976840639df824cb3abe60d13c65e04	Exploit, Third Party Advisory
report@snyk.io	https://github.com/felippe-regazio/ssrfcheck/commit/9507b49fd764f2a1a1d1e3b9ee577b7545e6950e	Patch
report@snyk.io	https://github.com/felippe-regazio/ssrfcheck/issues/5	Issue Tracking
report@snyk.io	https://security.snyk.io/vuln/SNYK-JS-SSRFCHECK-9510756	Exploit, Third Party Advisory

Impacted products

	Vendor	Product	Version
	felipperegazio	ssrf_check	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "ssrfcheck",
          "vendor": "n/a",
          "versions": [
            {
              "lessThan": "1.2.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "report@snyk.io"
    }
  ],
  "configurations": [
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              "versionEndExcluding": "1.2.0",
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    },
    {
      "lang": "es",
      "value": "Las versiones del paquete ssrfcheck anteriores a la 1.2.0 son vulnerables a la Server-Side Request Forgery (SSRF) debido a una lista de denegaci\u00f3n incompleta de rangos de direcciones IP. En concreto, el paquete no clasifica el espacio de direcciones IP reservado 224.0.0.0/4 (Multicast) como inv\u00e1lido. Este descuido permite a los atacantes manipular solicitudes dirigidas a estas direcciones de multicast."
    }
  ],
  "id": "CVE-2025-8267",
  "lastModified": "2026-06-17T10:06:38.690",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
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          "version": "3.1"
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        "type": "Secondary"
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        "source": "nvd@nist.gov",
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    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
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          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
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          "subConfidentialityImpact": "NONE",
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          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/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",
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    ],
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  "references": [
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      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://gist.github.com/lirantal/2976840639df824cb3abe60d13c65e04"
    },
    {
      "source": "report@snyk.io",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/felippe-regazio/ssrfcheck/commit/9507b49fd764f2a1a1d1e3b9ee577b7545e6950e"
    },
    {
      "source": "report@snyk.io",
      "tags": [
        "Issue Tracking"
      ],
      "url": "https://github.com/felippe-regazio/ssrfcheck/issues/5"
    },
    {
      "source": "report@snyk.io",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://security.snyk.io/vuln/SNYK-JS-SSRFCHECK-9510756"
    }
  ],
  "sourceIdentifier": "report@snyk.io",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "report@snyk.io",
      "type": "Secondary"
    }
  ]
}

GHSA-C2FV-2FMJ-9XRX

Vulnerability from github – Published: 2025-07-28 06:30 – Updated: 2026-05-05 20:25

Withdrawn 2026-05-05

Summary

Duplicate Advisory: ssrfcheck has Incomplete IP Address Deny List that leads to Server-Side Request Forgery Vulnerability

Details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-p4hc-9pjh-55c8. This link is maintained to preserve external references.

Original Description

Versions of the package ssrfcheck below 1.2.0 are vulnerable to Server-Side Request Forgery (SSRF) due to an incomplete denylist of IP address ranges. Specifically, the package fails to classify the reserved IP address space 224.0.0.0/4 (Multicast) as invalid. This oversight allows attackers to craft requests targeting these multicast addresses.

Severity

8.2 (High)


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

7.8 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "ssrfcheck"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-07-28T16:42:51Z",
    "nvd_published_at": "2025-07-28T05:16:20Z",
    "severity": "HIGH"
  },
  "details": "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-p4hc-9pjh-55c8. This link is maintained to preserve external references.\n\n### Original Description\nVersions of the package ssrfcheck below 1.2.0 are vulnerable to Server-Side Request Forgery (SSRF) due to an incomplete denylist of IP address ranges. Specifically, the package fails to classify the reserved IP address space 224.0.0.0/4 (Multicast) as invalid. This oversight allows attackers to craft requests targeting these multicast addresses.",
  "id": "GHSA-c2fv-2fmj-9xrx",
  "modified": "2026-05-05T20:25:33Z",
  "published": "2025-07-28T06:30:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-8267"
    },
    {
      "type": "WEB",
      "url": "https://github.com/felippe-regazio/ssrfcheck/issues/5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/felippe-regazio/ssrfcheck/commit/9507b49fd764f2a1a1d1e3b9ee577b7545e6950e"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/lirantal/2976840639df824cb3abe60d13c65e04"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/felippe-regazio/ssrfcheck"
    },
    {
      "type": "WEB",
      "url": "https://security.snyk.io/vuln/SNYK-JS-SSRFCHECK-9510756"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Duplicate Advisory: ssrfcheck has Incomplete IP Address Deny List that leads to Server-Side Request Forgery Vulnerability",
  "withdrawn": "2026-05-05T20:25:33Z"
}

GHSA-P4HC-9PJH-55C8

Vulnerability from github – Published: 2026-05-05 20:29 – Updated: 2026-05-05 20:29

Summary

ssrfcheck: SSRF Bypass Caused by Failure to Classify Reserved IP Address Space as Invalid

Details

SSRF Bypass in `ssrfcheck` - fails to classify reserved IP address space as invalid

ssrfcheck is an npm package that serves to provide protection from SSRF by validating URLs or hostname inputs.

Resources: * Project's GitHub code repository: https://github.com/felippe-regazio/ssrfcheck * Project's npm package: https://www.npmjs.com/package/ssrfcheck

Vulnerability

The ssrfcheck package maintains a denylist of IP addresses and ranges to check against when validating if an IP address is to be considered as safe or not.

However, the IP address list used for the denylist is incomplete and misses a reserved IP address space as defined by the IANA (Internet Assigned Numbers Authority):

224.0.0.0/4 - Multicast

Practically, this reserved IP address space is used for multicast traffic and would most commonly be used for reserved local communication over network protocols such as UDP, which would make it less likely to be used in a typical SSRF attack in practice.

However, such reserved IP address space shouldn't be allowed and it would be responsible of the SSRF protection package to align and conform to an agreed-upon standard of special-purposed addresses that should not be considered a valid public IP address. For reference, the popular npm packages private-ip and ipaddr.js that are highly dependent-upon to make decisions about SSRF protection and both consider the above mentioned IP address space as reserved and is not considered a valid public IP address.

Exploit Proof of Concept

Install the ssrfcheck package:

npm install ssrfcheck

Define an app.js file with the programmatic API of ssrfcheck:

import { isSSRFSafeURL } from 'ssrfcheck';

let result
result = isSSRFSafeURL('https://012.1.2.3/whatever');
console.log(result);  // returns false
result = isSSRFSafeURL('https://localhost:8080/whatever');
console.log(result);  // returns false

result = isSSRFSafeURL('https://239.255.255.250:8080/whatever');
console.log(result);  // returns true - bypassed

Vulnerable versions

All versions of ssrfcheck are vulnerable to this issue, up to and including to the latest version of 1.1.1.

Assigned CVE

CVE-2025-8267

Author

Liran Tal

Severity

7.5 (High)


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

7.8 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "ssrfcheck"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-8267"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-05T20:29:06Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "# SSRF Bypass in `ssrfcheck` - fails to classify reserved IP address space as invalid\n\n`ssrfcheck` is an npm package that serves to provide protection from SSRF by validating URLs or hostname inputs.\n\nResources: \n * Project\u0027s GitHub code repository: https://github.com/felippe-regazio/ssrfcheck\n * Project\u0027s npm package: https://www.npmjs.com/package/ssrfcheck\n \n## Vulnerability\n\nThe `ssrfcheck` package maintains a denylist of IP addresses and ranges to check against when validating if an IP address is to be considered as safe or not.\n\nHowever, the IP address list used for the denylist is incomplete and misses a reserved IP address space as defined by the IANA (Internet Assigned Numbers Authority):\n\n- 224.0.0.0/4 - Multicast\n\nPractically, this reserved IP address space is used for multicast traffic and would most commonly be used for reserved local communication over network protocols such as UDP, which would make it less likely to be used in a typical SSRF attack in practice.\n\nHowever, such reserved IP address space shouldn\u0027t be allowed and it would be responsible of the SSRF protection package to align and conform to an agreed-upon standard of special-purposed addresses that should not be considered a valid public IP address. For reference, the popular npm packages `private-ip` and `ipaddr.js` that are highly dependent-upon to make decisions about SSRF protection and both consider the above mentioned IP address space as reserved and is not considered a valid public IP address.\n\n## Exploit Proof of Concept\n\n1. Install the `ssrfcheck` package:\n\n```bash\nnpm install ssrfcheck\n```\n\n2. Define an `app.js` file with the programmatic API of `ssrfcheck`:\n\n```javascript\nimport { isSSRFSafeURL } from \u0027ssrfcheck\u0027;\n\nlet result\nresult = isSSRFSafeURL(\u0027https://012.1.2.3/whatever\u0027);\nconsole.log(result);  // returns false\nresult = isSSRFSafeURL(\u0027https://localhost:8080/whatever\u0027);\nconsole.log(result);  // returns false\n\nresult = isSSRFSafeURL(\u0027https://239.255.255.250:8080/whatever\u0027);\nconsole.log(result);  // returns true - bypassed\n```\n\n## Vulnerable versions\n\nAll versions of ssrfcheck are vulnerable to this issue, up to and including to the latest version of `1.1.1`.\n\n## Assigned CVE\n\n[CVE-2025-8267](https://nvd.nist.gov/vuln/detail/CVE-2025-8267)\n\n# Author\n\nLiran Tal",
  "id": "GHSA-p4hc-9pjh-55c8",
  "modified": "2026-05-05T20:29:06Z",
  "published": "2026-05-05T20:29:06Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/felippe-regazio/ssrfcheck/security/advisories/GHSA-p4hc-9pjh-55c8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-8267"
    },
    {
      "type": "WEB",
      "url": "https://github.com/felippe-regazio/ssrfcheck/issues/5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/felippe-regazio/ssrfcheck/commit/9507b49fd764f2a1a1d1e3b9ee577b7545e6950e"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/lirantal/2976840639df824cb3abe60d13c65e04"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/felippe-regazio/ssrfcheck"
    },
    {
      "type": "WEB",
      "url": "https://security.snyk.io/vuln/SNYK-JS-SSRFCHECK-9510756"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "ssrfcheck: SSRF Bypass Caused by Failure to Classify Reserved IP Address Space as Invalid"
}

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.

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.

Action not permitted

CVE-2025-8267 (GCVE-0-2025-8267)

FKIE_CVE-2025-8267

GHSA-C2FV-2FMJ-9XRX

Duplicate Advisory

Original Description

GHSA-P4HC-9PJH-55C8

SSRF Bypass in ssrfcheck - fails to classify reserved IP address space as invalid

Vulnerability

Exploit Proof of Concept

Vulnerable versions

Assigned CVE

Author

Tags

Sightings

Nomenclature

Related by attack behaviour

SSRF Bypass in `ssrfcheck` - fails to classify reserved IP address space as invalid