Weakness (CWE)
CWE-918: Server-Side Request Forgery
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.
How to prevent it (3 mitigations)
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Implementation, Operation
If there is a known list of applications, IP, hostname, and/or domains to which the product is allowed to communicate, then use allowlists to ensure that outgoing requests are restricted to these known entities. The allowlists could be in the application code or possibly enforced by firewalls or network segmentation [REF-1511].
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Implementation, Operation
If the product is expected to be able to connect to arbitrary IP addresses or domains, consider using a denylist that includes private network addresses, internal domain names, etc. The denylist could be in the application code or possibly enforced by firewalls or network segmentation [REF-1511].
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Implementation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
When constructing outgoing requests from input strings, use stringent allowlists that limit the character set based on the expected value of the parameter in the request. This will indirectly limit the scope of an attack, but this technique is less important than proper output encoding and escaping.
Source: MITRE CWE-918
341 results · Clear filters · Feed
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Critical 9.2
Server-Side Request Forgery and Credential Exfiltration in Google Cloud Apigee via SetIntegrationRequest Policy.
A vulnerability in the Google Cloud Apigee SetIntegrationRequest policy allowed remote attackers to perform Server-Side Request Forgery (SSRF) and exfiltrate service account access tokens. For successful exploitation, an administrator must initially establish…
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Critical 10.0
TypeBot: Unauthenticated SSRF via isolated-vm fetch in preview chat endpoint bypasses SSRF controls
Typebot is a chatbot builder tool. In versions 3.15.2 and prior, the preview chat endpoint (POST /api/v1/typebots/{typebotId}/preview/startChat) allows unauthenticated users to achieve Server-Side Request Forgery (SSRF) by supplying a custom typebot definitio…
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Critical 9.8
scalar/astro v0.1.13 was discovered to contain a Server-Side Request Forgery (SSRF) in the scalar_url query parameter o…
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Critical 9.2
MagicMirror²: Unauthenticated SSRF via /cors endpoint
MagicMirror² is an open source modular smart mirror platform. Prior to 2.36.0, an unauthenticated Server-Side Request Forgery (SSRF) vulnerability in the /cors endpoint allows any remote attacker to force the MagicMirror² server to perform arbitrary HTTP requ…
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Critical 9.4CVE-2026-42596 Scanner template
Gotenberg: Unauthenticated SSRF via default deny-list bypass in downloadFrom and webhook
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, the default deny-lists used by Gotenberg's downloadFrom feature and webhook feature are bypassable. Because the filter is regex-based and case-sensitive, an unauthenticated attacker c…
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Critical 9.9
FireFighter: Unauthenticated SSRF in Raid jira_bot endpoint allows IAM credential theft
FireFighter is an incident management application. Prior to 0.0.54, the POST /api/v2/firefighter/raid/jira_bot endpoint (CreateJiraBotView) is reachable without authentication (permission_classes = [permissions.AllowAny]). Its attachments payload is fetched s…
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Critical 9.1
LinkWarden: Server-Side Request Forgery (SSRF) in Link Creation via fetchTitleAndHeaders Function
Linkwarden is a self-hosted, open-source collaborative bookmark manager to collect, organize and archive webpages. Prior to version 2.13.0, a Server-Side Request Forgery (SSRF) vulnerability in the fetchTitleAndHeaders function allows authenticated users to m…
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Critical 9.2
PhpSpreadsheet SSRF and RCE via PHP stream wrappers in IOFactory::load
PhpSpreadsheet is a library for reading and writing spreadsheet files. In versions 1.30.2 and earlier, 2.0.0 through 2.1.14, 2.2.0 through 2.4.3, 3.3.0 through 3.10.3, and 4.0.0 through 5.5.0, when the filename argument to IOFactory::load() is user-controlled…
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Critical 10.0
Microsoft Entra ID Entitlement Management Spoofing Vulnerability
Server-side request forgery (ssrf) in Microsoft Entra ID Entitlement Management allows an unauthorized attacker to perform spoofing over a network.
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Critical 9.3
Microsoft Dynamics 365 (online) Spoofing Vulnerability
Server-side request forgery (ssrf) in Microsoft Dynamics 365 (Online) allows an unauthorized attacker to perform spoofing over a network.
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Critical 9.9
Sonicverse has Server-Side Request Forgery via user-controlled URLs in dashboard API client
Sonicverse is a Self-hosted Docker Compose stack for live radio streaming. The Sonicverse Radio Audio Streaming Stack dashboard contains a Server-Side Request Forgery (SSRF) vulnerability in its API client (apps/dashboard/lib/api.ts). Installations created us…
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Critical 9.1
Jizhicms v2.5.4 is vulnerable to Server-Side Request Forgery (SSRF) in User Evaluation, Message, and Comment modules.
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Critical 9.1
QD 20230821 is vulnerable to Server-side request forgery (SSRF) via a crafted request
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Critical 9.1
A Server-Side Request Forgery (SSRF) vulnerability exists in the Print Format functionality of ERPNext v16.0.1 and Frap…
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Critical 9.3
pyLoad has SSRF fix bypass via HTTP redirect
pyLoad is a free and open-source download manager written in Python. In 0.5.0b3.dev96 and earlier, pyLoad has a server-side request forgery (SSRF) vulnerability. The fix for CVE-2026-33992 added IP validation to BaseDownloader.download() that checks the hostn…
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Critical 9.1
Arbitrary internal service access via /v1/sys/proxy when Cloudflare Tunnel is enabled on ZimaOS
ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. Prior to version 1.5.3, a proxy endpoint (/v1/sys/proxy) exposed by ZimaOS's web interface can be abused (via an externally reachable domain using a Cloudflare Tunn…
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Critical 10.0
Microsoft Bing Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Microsoft Bing allows an unauthorized attacker to elevate privileges over a network.
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Critical 9.6
Budibase: Server-Side Request Forgery via REST Connector with Empty Default Blacklist
Budibase is an open-source low-code platform. Prior to version 3.33.4, a server-side request forgery (SSRF) vulnerability exists in Budibase's REST datasource connector. The platform's SSRF protection mechanism (IP blacklist) is rendered completely ineffectiv…
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Critical 9.6
Azure Custom Locations Resource Provider (RP) Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Azure Custom Locations Resource Provider (RP) allows an authorized attacker to elevate privileges over a network.
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Critical 10.0
Azure Databricks Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Azure Databricks allows an unauthorized attacker to elevate privileges over a network.
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Critical 10.0
FastMCP OpenAPI Provider has an SSRF & Path Traversal Vulnerability
FastMCP is a Pythonic way to build MCP servers and clients. Prior to version 3.2.0, the OpenAPIProvider in FastMCP exposes internal APIs to MCP clients by parsing OpenAPI specifications. The RequestDirector class is responsible for constructing HTTP requests …
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Critical 10.0
FastGPT: Unauthenticated SSRF via httpTools Endpoint Leads to Internal API Key Theft
FastGPT is an AI Agent building platform. Prior to version 4.14.9.5, the FastGPT HTTP tools testing endpoint (/api/core/app/httpTools/runTool) is exposed without any authentication. This endpoint acts as a full HTTP proxy — it accepts a user-supplied baseUrl,…
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Critical 9.8
CVE-2026-4789
Kyverno, versions 1.16.0 and later, are vulnerable to SSRF due to unrestricted CEL HTTP functions.
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Critical 9.3
pyLoad: Server-Side Request Forgery via Download Link Submission Enables Cloud Metadata Exfiltration
pyLoad is a free and open-source download manager written in Python. Prior to version 0.5.0b3.dev97, PyLoad's download engine accepts arbitrary URLs without validation, enabling Server-Side Request Forgery (SSRF) attacks. An authenticated attacker can exploit…
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Critical 9.1
LoLLMs WEBUI has unauthenticated Server-Side Request Forgery (SSRF) in /api/proxy endpoint
LoLLMs WEBUI provides the Web user interface for Lord of Large Language and Multi modal Systems. A critical Server-Side Request Forgery (SSRF) vulnerability has been identified in all known existing versions of `lollms-webui`. The `@router.post("/api/proxy")`…
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Critical 9.3
AVideo has Unauthenticated SSRF via plugin/Live/test.php
WWBN AVideo is an open source video platform. In versions up to and including 26.0, an unauthenticated server-side request forgery vulnerability in `plugin/Live/test.php` allows any remote user to make the AVideo server send HTTP requests to arbitrary URLs. T…
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Critical 9.1
AVideo has Unauthenticated SSRF via `webSiteRootURL` Parameter in saveDVR.json.php, Chaining to Verification Bypass
WWBN AVideo is an open source video platform. Prior to version 26.0, a Server-Side Request Forgery (SSRF) vulnerability exists in `plugin/Live/standAloneFiles/saveDVR.json.php`. When the AVideo Live plugin is deployed in standalone mode (the intended configur…
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Critical 9.3
AVideo-Encoder has Unauthenticated Blind Server-Side Request Forgery via Public Thumbnail Generator
AVideo is a video-sharing Platform. Versions prior to 8.0 contain a Server-Side Request Forgery vulnerability (CWE-918) in the public thumbnail endpoints getImage.php and getImageMP4.php. Both endpoints accept a base64Url GET parameter, base64-decode it, and …
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Critical 9.9
Microsoft Exchange Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Microsoft Exchange allows an authorized attacker to elevate privileges over a network.
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Critical 10.0
Azure Cloud Shell Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Azure Cloud Shell allows an unauthorized attacker to elevate privileges over a network.
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Critical 9.1
Spinnaker clouddriver and orca URL validation bypass via underscores in hostnames
### Impact Spinnaker updated URL Validation logic on user input to provide sanitation on user inputted URLs for clouddriver. However, they missed that Java URL objects do not correctly handle underscores on parsing. This led to a bypass of the previous CVE (C…
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Critical 9.3
Centrifugo: SSRF via unverified JWT claims interpolated into dynamic JWKS endpoint URL
Centrifugo is an open-source scalable real-time messaging server. Prior to 6.7.0, Centrifugo is vulnerable to Server-Side Request Forgery (SSRF) when configured with a dynamic JWKS endpoint URL using template variables (e.g. {{tenant}}). An unauthenticated at…
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Critical 9.3CVE-2026-32096 Public exploit
Plunk has SSRF via unvalidated AWS SNS SubscriptionConfirmation in POST /webhooks/sns
Plunk is an open-source email platform built on top of AWS SES. Prior to 0.7.0, a Server-Side Request Forgery (SSRF) vulnerability existed in the SNS webhook handler. An unauthenticated attacker could send a crafted request that caused the server to make an a…
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Critical 9.8
An issue pertaining to CWE-918: Server-Side Request Forgery was discovered in oslabs-beta ThermaKube master.
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Critical 9.1
Soft Serve: SSRF via unvalidated LFS endpoint in repo import
Soft Serve is a self-hostable Git server for the command line. From version 0.6.0 to before version 0.11.4, an authenticated SSH user can force the server to make HTTP requests to internal/private IP addresses by running repo import with a crafted --lfs-endpo…
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Critical 9.3
Wekan Vulnerable to SSRF through Lack of Validation or Filtering in Attachment URL Loading
Wekan is an open source kanban tool built with Meteor. Versions 8.32 and 8.33 are vulnerable to Server-Side Request Forgery (SSRF) via attachment URL loading. During board import in Wekan, attachment URLs from user-supplied JSON data are fetched directly by t…
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Critical 9.3
Ghostfolio: Full-Read SSRF in Manual Asset Import
Ghostfolio is an open source wealth management software. Prior to version 2.245.0, an attacker can exploit the manual asset import feature to perform a full-read SSRF, allowing them to exfiltrate sensitive cloud metadata (IMDS) or probe internal network servi…
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Critical 9.2
Idno: Unauthenticated SSRF via URL Unfurl Endpoint
Idno is a social publishing platform. Prior to version 1.6.4, a logic error in the API authentication flow causes the CSRF protection on the URL unfurl service endpoint to be trivially bypassed by any unauthenticated remote attacker. Combined with the absence…
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Critical 9.2CVE-2026-27739 Public exploit
Angular SSR is vulnerable to SSRF and Header Injection via request handling pipeline
The Angular SSR is a server-rise rendering tool for Angular applications. Versions prior to 21.2.0-rc.1, 21.1.5, 20.3.17, and 19.2.21 have a Server-Side Request Forgery (SSRF) vulnerability in the Angular SSR request handling pipeline. The vulnerability exist…
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Critical 10.0
DocLink .NET Remoting Unauthenticated Arbitrary File Read/Write RCE
Altec DocLink (now maintained by Beyond Limits Inc.) version 4.0.336.0 exposes insecure .NET Remoting endpoints over TCP and HTTP/SOAP via Altec.RDCHostService.exe using the ObjectURI "doclinkServer.soap". The service does not require authentication and is vu…