Common Weakness Enumeration

CWE-918

Allowed

Server-Side Request Forgery (SSRF)

Abstraction: Base · Status: Incomplete

API response cwe.mitre.org

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

4755 vulnerabilities reference this CWE, most recent first.

GHSA-GC9G-67CQ-P7V4

Vulnerability from github – Published: 2021-06-15 16:12 – Updated: 2024-10-18 21:48
VLAI
Summary
Server-Side Request Forgery in Plone
Details

Plone though 5.2.4 allows SSRF via the lxml parser. This affects Diazo themes, Dexterity TTW schemas, and modeleditors in plone.app.theming, plone.app.dexterity, and plone.supermodel.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "Plone"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "5.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-33511"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-05-27T21:47:01Z",
    "nvd_published_at": "2021-05-21T22:15:00Z",
    "severity": "HIGH"
  },
  "details": "Plone though 5.2.4 allows SSRF via the lxml parser. This affects Diazo themes, Dexterity TTW schemas, and modeleditors in plone.app.theming, plone.app.dexterity, and plone.supermodel.",
  "id": "GHSA-gc9g-67cq-p7v4",
  "modified": "2024-10-18T21:48:44Z",
  "published": "2021-06-15T16:12:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33511"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-gc9g-67cq-p7v4"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/plone/Plone"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2021-83.yaml"
    },
    {
      "type": "WEB",
      "url": "https://plone.org/security/hotfix/20210518/server-side-request-forgery-via-lxml-parser"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2021/05/22/1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Server-Side Request Forgery in Plone"
}

GHSA-GCFC-JWHF-63VR

Vulnerability from github – Published: 2023-09-15 18:30 – Updated: 2024-04-04 07:42
VLAI
Details

An issue in zzCMS v.2023 allows a remote attacker to execute arbitrary code and obtain sensitive information via the ueditor component in controller.php.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2023-42398"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-09-15T17:15:14Z",
    "severity": "CRITICAL"
  },
  "details": "An issue in zzCMS v.2023 allows a remote attacker to execute arbitrary code and obtain sensitive information via the ueditor component in controller.php.",
  "id": "GHSA-gcfc-jwhf-63vr",
  "modified": "2024-04-04T07:42:33Z",
  "published": "2023-09-15T18:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-42398"
    },
    {
      "type": "WEB",
      "url": "https://github.com/laterfuture/php-audit/blob/main/CVE-2023-42398%E2%80%94%E2%80%94ZZCMS2023%20SSRF"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-GCJ7-J438-HJJ2

Vulnerability from github – Published: 2022-04-07 22:10 – Updated: 2022-04-07 22:10
VLAI
Summary
Smokescreen SSRF via deny list bypass
Details

The primary use case for Smokescreen is to prevent server-side request forgery (SSRF) attacks in which external attackers leverage the behavior of applications to connect to or scan internal infrastructure.

Smokescreen also offers an option to deny access to additional (e.g., external) URLs by way of a deny list. There was an issue in Smokescreen that made it possible to bypass the deny list feature by appending a dot to the end of user-supplied URLs, or by providing input in a different letter case.

Recommendation

Upgrade Smokescreen to version 0.0.3 or later.

Acknowledgements

Thanks to Grzegorz Niedziela for reporting the issue.

For more information

Email us at security@stripe.com

Severity
5.8 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/stripe/smokescreen"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-24825"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-04-07T22:10:22Z",
    "nvd_published_at": "2022-04-19T20:15:00Z",
    "severity": "MODERATE"
  },
  "details": "The primary use case for Smokescreen is to prevent server-side request forgery (SSRF) attacks in which external attackers leverage the behavior of applications to connect to or scan internal infrastructure.\n\nSmokescreen also offers an option to deny access to additional (e.g., external) URLs by way of a deny list. There was an issue in Smokescreen that made it possible to bypass the deny list feature by appending a dot to the end of user-supplied URLs, or by providing input in a different letter case.\n\n### Recommendation\nUpgrade Smokescreen to version 0.0.3 or later.\n\n### Acknowledgements\nThanks to [Grzegorz Niedziela](https://twitter.com/gregxsunday) for reporting the issue.\n\n### For more information\nEmail us at security@stripe.com",
  "id": "GHSA-gcj7-j438-hjj2",
  "modified": "2022-04-07T22:10:22Z",
  "published": "2022-04-07T22:10:22Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/stripe/smokescreen/security/advisories/GHSA-gcj7-j438-hjj2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-24825"
    },
    {
      "type": "WEB",
      "url": "https://github.com/stripe/smokescreen/commit/fafb6ae48c6c40aa011d87b61306abc48db8797b"
    },
    {
      "type": "PACKAGE",
      "url": "github.com/stripe/smokescreen"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Smokescreen SSRF via deny list bypass"
}

GHSA-GCV9-6737-PJQW

Vulnerability from github – Published: 2022-01-27 16:24 – Updated: 2024-09-24 18:39
VLAI
Summary
SSRF vulnerability in jupyter-server-proxy
Details

Impact

What kind of vulnerability is it? Server-Side Request Forgery ( SSRF )

Who is impacted? Any user deploying Jupyter Server or Notebook with jupyter-proxy-server extension enabled.

A lack of input validation allowed authenticated clients to proxy requests to other hosts, bypassing the allowed_hosts check. Because authentication is required, which already grants permissions to make the same requests via kernel or terminal execution, this is considered low to moderate severity.

Patches

Has the problem been patched? What versions should users upgrade to?

Upgrade to 3.2.1, or apply the patch https://github.com/jupyterhub/jupyter-server-proxy/compare/v3.2.0...v3.2.1.patch

For more information

If you have any questions or comments about this advisory:

Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 3.2.0"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "jupyter-server-proxy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-21697"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-01-25T20:57:43Z",
    "nvd_published_at": "2022-01-25T14:15:00Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\n\n**What kind of vulnerability is it?**  Server-Side Request Forgery ( SSRF )\n\n**Who is impacted?** Any user deploying Jupyter Server or Notebook with jupyter-proxy-server extension enabled. \n\nA lack of input validation allowed authenticated clients to proxy requests to other hosts, bypassing the `allowed_hosts` check. Because authentication is required, which already grants permissions to make the same requests via kernel or terminal execution, this is considered low to moderate severity.\n\n\n### Patches\n\n_Has the problem been patched? What versions should users upgrade to?_\n\nUpgrade to 3.2.1, or apply the patch https://github.com/jupyterhub/jupyter-server-proxy/compare/v3.2.0...v3.2.1.patch\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open a topic [on our forum](https://discourse.jupyter.org)\n* Email the Jupyter security team at [security@ipython.org](mailto:security@ipython.org)\n",
  "id": "GHSA-gcv9-6737-pjqw",
  "modified": "2024-09-24T18:39:15Z",
  "published": "2022-01-27T16:24:26Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/jupyterhub/jupyter-server-proxy/security/advisories/GHSA-gcv9-6737-pjqw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-21697"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jupyterhub/jupyter-server-proxy/commit/fd31930bacd12188c448c886e0783529436b99eb"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jupyterhub/jupyter-server-proxy"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jupyterhub/jupyter-server-proxy/compare/v3.2.0...v3.2.1.patch"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/jupyter-server-proxy/PYSEC-2022-16.yaml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "SSRF vulnerability in jupyter-server-proxy"
}

GHSA-GCVV-GQ92-X94R

Vulnerability from github – Published: 2021-08-23 19:42 – Updated: 2021-08-23 17:22
VLAI
Summary
Authenticated server-side request forgery in file upload via URL.
Details

Impact

Authenticated server-side request forgery in file upload via URL.

Patches

We recommend updating to the current version 6.4.3.1. You can get the update to 6.4.3.1 regularly via the Auto-Updater or directly via the download overview.

https://www.shopware.com/en/download/#shopware-6

Workarounds

For older versions of 6.1, 6.2, and 6.3, corresponding security measures are also available via a plugin. For the full range of functions, we recommend updating to the latest Shopware version.

Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 6.4.3.0"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "shopware/platform"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.4.3.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 6.4.3.0"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "shopware/core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.4.3.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-37711"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-23T17:22:58Z",
    "nvd_published_at": "2021-08-16T23:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nAuthenticated server-side request forgery in file upload via URL.\n\n### Patches\nWe recommend updating to the current version 6.4.3.1. You can get the update to 6.4.3.1 regularly via the Auto-Updater or directly via the download overview.\n\nhttps://www.shopware.com/en/download/#shopware-6\n\n### Workarounds\nFor older versions of 6.1, 6.2, and 6.3, corresponding security measures are also available via a plugin. For the full range of functions, we recommend updating to the latest Shopware version.",
  "id": "GHSA-gcvv-gq92-x94r",
  "modified": "2021-08-23T17:22:58Z",
  "published": "2021-08-23T19:42:49Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/shopware/platform/security/advisories/GHSA-gcvv-gq92-x94r"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-37711"
    },
    {
      "type": "WEB",
      "url": "https://github.com/shopware/platform/commit/b9f330e652b743dd2374c02bbe68f28b59a3f502"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/shopware/platform"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Authenticated server-side request forgery in file upload via URL."
}

GHSA-GF2H-5QX6-V9FR

Vulnerability from github – Published: 2022-05-24 16:45 – Updated: 2025-10-22 00:31
VLAI
Details

Zimbra Collaboration Suite before 8.6 patch 13, 8.7.x before 8.7.11 patch 10, and 8.8.x before 8.8.10 patch 7 or 8.8.x before 8.8.11 patch 3 allows SSRF via the ProxyServlet component.

Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2019-9621"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-04-30T18:29:00Z",
    "severity": "HIGH"
  },
  "details": "Zimbra Collaboration Suite before 8.6 patch 13, 8.7.x before 8.7.11 patch 10, and 8.8.x before 8.8.10 patch 7 or 8.8.x before 8.8.11 patch 3 allows SSRF via the ProxyServlet component.",
  "id": "GHSA-gf2h-5qx6-v9fr",
  "modified": "2025-10-22T00:31:39Z",
  "published": "2022-05-24T16:45:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-9621"
    },
    {
      "type": "WEB",
      "url": "https://blog.tint0.com/2019/03/a-saga-of-code-executions-on-zimbra.html"
    },
    {
      "type": "WEB",
      "url": "https://blog.zimbra.com/2019/03/9826"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.zimbra.com/show_bug.cgi?id=109127"
    },
    {
      "type": "WEB",
      "url": "https://wiki.zimbra.com/wiki/Security_Center"
    },
    {
      "type": "WEB",
      "url": "https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-9621"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/46693"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.html"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/153190/Zimbra-XML-Injection-Server-Side-Request-Forgery.html"
    },
    {
      "type": "WEB",
      "url": "http://www.rapid7.com/db/modules/exploit/linux/http/zimbra_xxe_rce"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-GF3V-FWQG-4VH7

Vulnerability from github – Published: 2026-02-11 15:13 – Updated: 2026-02-12 14:19
VLAI
Summary
@langchain/community affected by SSRF Bypass in RecursiveUrlLoader via insufficient URL origin validation
Details

Description

The RecursiveUrlLoader class in @langchain/community is a web crawler that recursively follows links from a starting URL. Its preventOutside option (enabled by default) is intended to restrict crawling to the same site as the base URL.

The implementation used String.startsWith() to compare URLs, which does not perform semantic URL validation. An attacker who controls content on a crawled page could include links to domains that share a string prefix with the target (e.g., https://example.com.attacker.com passes a startsWith check against https://example.com), causing the crawler to follow links to attacker-controlled or internal infrastructure.

Additionally, the crawler performed no validation against private or reserved IP addresses. A crawled page could include links targeting cloud metadata services (169.254.169.254), localhost, or RFC 1918 addresses, and the crawler would fetch them without restriction.

Impact

An attacker who can influence the content of a page being crawled (e.g., by placing a link on a public-facing page, forum, or user-generated content) could cause the crawler to:

  • Fetch cloud instance metadata (AWS, GCP, Azure), potentially exposing IAM credentials and session tokens
  • Access internal services on private networks (10.x, 172.16.x, 192.168.x)
  • Connect to localhost services
  • Exfiltrate response data via attacker-controlled redirect chains

This is exploitable in any environment where RecursiveUrlLoader runs on infrastructure with access to cloud metadata or internal services — which includes most cloud-hosted deployments.

Resolution

Two changes were made:

  1. Origin comparison replaced. The startsWith check was replaced with a strict origin comparison using the URL API (new URL(link).origin === new URL(baseUrl).origin). This correctly validates scheme, hostname, and port as a unit, preventing subdomain-based bypasses.

  2. SSRF validation added to all fetch operations. A new URL validation module (@langchain/core/utils/ssrf) was introduced and applied before every outbound fetch in the crawler. This blocks requests to:

  3. Cloud metadata endpoints: 169.254.169.254, 169.254.170.2, 100.100.100.200, metadata.google.internal, and related hostnames
  4. Private IP ranges: 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, 127.0.0.0/8, 169.254.0.0/16
  5. IPv6 equivalents: ::1, fc00::/7, fe80::/10
  6. Non-HTTP/HTTPS schemes (file:, ftp:, javascript:, etc.)

Cloud metadata endpoints are unconditionally blocked and cannot be overridden.

Workarounds

Users who cannot upgrade immediately should avoid using RecursiveUrlLoader on untrusted or user-influenced content, or should run the crawler in a network environment without access to cloud metadata or internal services.

Severity
4.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.1.13"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@langchain/community"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.14"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-26019"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-11T15:13:20Z",
    "nvd_published_at": "2026-02-11T22:15:51Z",
    "severity": "MODERATE"
  },
  "details": "## Description\n\nThe `RecursiveUrlLoader` class in `@langchain/community` is a web crawler that recursively follows links from a starting URL. Its `preventOutside` option (enabled by default) is intended to restrict crawling to the same site as the base URL.\n\nThe implementation used `String.startsWith()` to compare URLs, which does not perform semantic URL validation. An attacker who controls content on a crawled page could include links to domains that share a string prefix with the target (e.g., `https://example.com.attacker.com` passes a `startsWith` check against `https://example.com`), causing the crawler to follow links to attacker-controlled or internal infrastructure.\n\nAdditionally, the crawler performed no validation against private or reserved IP addresses. A crawled page could include links targeting cloud metadata services (`169.254.169.254`), localhost, or RFC 1918 addresses, and the crawler would fetch them without restriction.\n\n## Impact\n\nAn attacker who can influence the content of a page being crawled (e.g., by placing a link on a public-facing page, forum, or user-generated content) could cause the crawler to:\n\n- Fetch cloud instance metadata (AWS, GCP, Azure), potentially exposing IAM credentials and session tokens\n- Access internal services on private networks (`10.x`, `172.16.x`, `192.168.x`)\n- Connect to localhost services\n- Exfiltrate response data via attacker-controlled redirect chains\n\nThis is exploitable in any environment where `RecursiveUrlLoader` runs on infrastructure with access to cloud metadata or internal services \u2014 which includes most cloud-hosted deployments.\n\n## Resolution\n\nTwo changes were made:\n\n1. **Origin comparison replaced.** The `startsWith` check was replaced with a strict origin comparison using the URL API (`new URL(link).origin === new URL(baseUrl).origin`). This correctly validates scheme, hostname, and port as a unit, preventing subdomain-based bypasses.\n\n2. **SSRF validation added to all fetch operations.** A new URL validation module (`@langchain/core/utils/ssrf`) was introduced and applied before every outbound fetch in the crawler. This blocks requests to:\n   - **Cloud metadata endpoints:** `169.254.169.254`, `169.254.170.2`, `100.100.100.200`, `metadata.google.internal`, and related hostnames\n   - **Private IP ranges:** `10.0.0.0/8`, `172.16.0.0/12`, `192.168.0.0/16`, `127.0.0.0/8`, `169.254.0.0/16`\n   - **IPv6 equivalents:** `::1`, `fc00::/7`, `fe80::/10`\n   - **Non-HTTP/HTTPS schemes** (`file:`, `ftp:`, `javascript:`, etc.)\n\nCloud metadata endpoints are unconditionally blocked and cannot be overridden.\n\n## Workarounds\n\nUsers who cannot upgrade immediately should avoid using `RecursiveUrlLoader` on untrusted or user-influenced content, or should run the crawler in a network environment without access to cloud metadata or internal services.",
  "id": "GHSA-gf3v-fwqg-4vh7",
  "modified": "2026-02-12T14:19:06Z",
  "published": "2026-02-11T15:13:20Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/langchain-ai/langchainjs/security/advisories/GHSA-gf3v-fwqg-4vh7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26019"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langchain-ai/langchainjs/pull/9990"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langchain-ai/langchainjs/commit/d5e3db0d01ab321ec70a875805b2f74aefdadf9d"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/langchain-ai/langchainjs"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langchain-ai/langchainjs/releases/tag/%40langchain%2Fcommunity%401.1.14"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "@langchain/community affected by SSRF Bypass in RecursiveUrlLoader via insufficient URL origin validation"
}

GHSA-GFHV-5RQH-7QX3

Vulnerability from github – Published: 2025-03-29 00:31 – Updated: 2025-04-01 14:20
VLAI
Summary
ShopXO Vulnerable to Server-Side Request Forgery (SSRF) via Email Settings
Details

ShopXO v6.4.0 is vulnerable to Server-Side Request Forgery (SSRF) in Email Settings.

Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "shopxo/shopxo"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "6.4.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-28093"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-04-01T14:20:17Z",
    "nvd_published_at": "2025-03-28T22:15:18Z",
    "severity": "MODERATE"
  },
  "details": "ShopXO v6.4.0 is vulnerable to Server-Side Request Forgery (SSRF) in Email Settings.",
  "id": "GHSA-gfhv-5rqh-7qx3",
  "modified": "2025-04-01T14:20:17Z",
  "published": "2025-03-29T00:31:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-28093"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/gongfuxiang/shopxo"
    },
    {
      "type": "WEB",
      "url": "https://www.yuque.com/morysummer/vx41bz/he2hb8ic8an8h07f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ShopXO Vulnerable to Server-Side Request Forgery (SSRF) via Email Settings"
}

GHSA-GFJH-WVFW-6J4F

Vulnerability from github – Published: 2024-03-28 06:30 – Updated: 2026-04-01 18:31
VLAI
Details

Server-Side Request Forgery (SSRF) vulnerability in Kadence WP Gutenberg Blocks by Kadence Blocks.This issue affects Gutenberg Blocks by Kadence Blocks: from n/a through 3.2.19.

Severity
7.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2024-23500"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-28T06:15:10Z",
    "severity": "HIGH"
  },
  "details": "Server-Side Request Forgery (SSRF) vulnerability in Kadence WP Gutenberg Blocks by Kadence Blocks.This issue affects Gutenberg Blocks by Kadence Blocks: from n/a through 3.2.19.",
  "id": "GHSA-gfjh-wvfw-6j4f",
  "modified": "2026-04-01T18:31:43Z",
  "published": "2024-03-28T06:30:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-23500"
    },
    {
      "type": "WEB",
      "url": "https://patchstack.com/database/Wordpress/Plugin/kadence-blocks/vulnerability/wordpress-kadence-blocks-plugin-3-2-19-server-side-request-forgery-ssrf-vulnerability?_s_id=cve"
    },
    {
      "type": "WEB",
      "url": "https://patchstack.com/database/vulnerability/kadence-blocks/wordpress-kadence-blocks-plugin-3-2-19-server-side-request-forgery-ssrf-vulnerability?_s_id=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-GFPR-2VCF-JMXJ

Vulnerability from github – Published: 2026-04-08 09:31 – Updated: 2026-04-09 18:31
VLAI
Details

Server-Side Request Forgery (SSRF) vulnerability in Brecht Visual Link Preview visual-link-preview allows Server Side Request Forgery.This issue affects Visual Link Preview: from n/a through <= 2.3.0.

Severity
6.0 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-39670"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-08T09:16:38Z",
    "severity": "MODERATE"
  },
  "details": "Server-Side Request Forgery (SSRF) vulnerability in Brecht Visual Link Preview visual-link-preview allows Server Side Request Forgery.This issue affects Visual Link Preview: from n/a through \u003c= 2.3.0.",
  "id": "GHSA-gfpr-2vcf-jmxj",
  "modified": "2026-04-09T18:31:25Z",
  "published": "2026-04-08T09:31:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39670"
    },
    {
      "type": "WEB",
      "url": "https://patchstack.com/database/Wordpress/Plugin/visual-link-preview/vulnerability/wordpress-visual-link-preview-plugin-2-3-0-server-side-request-forgery-ssrf-vulnerability?_s_id=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ]
}

No mitigation information available for this CWE.

CAPEC-664: Server Side Request Forgery

An adversary exploits improper input validation by submitting maliciously crafted input to a target application running on a server, with the goal of forcing the server to make a request either to itself, to web services running in the server’s internal network, or to external third parties. If successful, the adversary’s request will be made with the server’s privilege level, bypassing its authentication controls. This ultimately allows the adversary to access sensitive data, execute commands on the server’s network, and make external requests with the stolen identity of the server. Server Side Request Forgery attacks differ from Cross Site Request Forgery attacks in that they target the server itself, whereas CSRF attacks exploit an insecure user authentication mechanism to perform unauthorized actions on the user's behalf.

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