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
1,406 results · Clear filters · Feed
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High 8.8
Angular: URL Parser Differential in @angular/platform-server leading to SSRF Allowlist Bypass
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23, an issue in the @angular/platform-server package allows remote attackers t…
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High 7.4
IBM WebSphere Application Server is affected by server-side request forgery
IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to server-side request forgery (SSRF) with the Ajax Proxy configured. This may allow an attacker to send unauthorized requests from the system, resulting in a security bypass or information disclosur…
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High 7.7CVE-2026-54017 Public exploit
Open WebUI: Path traversal / SSRF in terminal server proxy via encoded path traversal
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, the terminal-server reverse proxy in `backend/open_webui/routers/terminals.py` does not fully confine the user-controlled `path` segment before …
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High 7.2
CF7 to Webhook <= 5.0.0 - Unauthenticated Server-Side Request Forgery via CF7 Field Placeholder in Webhook URL Host
The CF7 to Webhook plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 5.0.0 via the pull_the_trigger. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations origina…
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High 8.2
TypeBot has SSRF in HTTP request and script fetch flows via DNS rebinding bypass
TypeBot is a chatbot builder tool. In versions prior to 3.17.2, SSRF validation is implemented by resolving a hostname once and checking whether the resolved IP belongs to a forbidden range allowing for DNS rebinding bypass. The root cause is a time-of-check …
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High 7.5
Starlette: SSRF and NTLM credential theft via UNC paths in StaticFiles on Windows
Starlette is a lightweight ASGI framework/toolkit. In versions 1.0.1 and earlier, StaticFiles on Windows is vulnerable to SSRF. An UNC path such as \\attacker.com\share can cause os.path.realpath to initiate an outbound SMB connection before the path is rejec…
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High 7.7
Sync-in Server: SSRF protection bypass via IPv4-mapped IPv6 addresses in regExpPrivateIP
Sync-in Server is a secure, open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.3.0, the private IP blocklist regex used in the URL download feature does not match IPv4-mapped IPv6 addresses (e.g. ::ffff:127.0.0.1), …
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High 8.1
Koillection has an authenticated Server-Side Request Forgery issue
An authenticated Server-Side Request Forgery (SSRF) in the custom scraper subsystem component of Benjamin Jonard Koillection v1.8.0 allows attackers to scan internal resources via supplying a crafted URL.
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High 7.7
Nezha Monitoring: RoleMember-reachable SSRF with full response-body reflection via POST /api/v1/notification
Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.4.0 to before version 2.0.8, nezha's dashboard supports two user roles: RoleAdmin (Role==0) and RoleMember (Role==1). The notification routes POST /…
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High 7.6
Apostrophe has authenticated SSRF in rich-text widget import via @apostrophecms/area/validate-widget
ApostropheCMS is an open-source Node.js content management system. Versions up to and including 4.29.0 contain an authenticated server-side request forgery (SSRF) in the rich-text widget import flow. An authenticated user who can submit/edit rich-text widget …
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High 7.7
Koel Vulnerable to SSRF via Podcast Episode Enclosure URLs
Koel is a free, open-source music streaming solution. Prior to version 9.3.5, Koel validates the podcast feed URL via the SafeUrl rule (DNS resolution + public IP check), but the individual episode <enclosure url="..."> values extracted from the RSS XML are s…
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High 7.7
OpenClaw < 2026.5.18 - Private-Network Navigation Bypass via Browser Act Interactions
OpenClaw before 2026.5.18 contains a server-side request forgery vulnerability in browser control that allows authenticated users to bypass private-network navigation checks through Playwright act interactions. Attackers can trigger navigation to private-netw…
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High 7.4
Summarize < 0.17.0 SSRF via podcast:transcript URL fetch
Summarize before 0.17.0 contains a server-side request forgery vulnerability that allows attackers who control a podcast RSS feed to direct the host to fetch transcript content from loopback addresses, link-local addresses, RFC 1918 private ranges, or other r…
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High 7.7
Garlic-Hub: SSRF vulnerability in uploadFromUrl endpoint
Garlic-Hub manages digital signage network — devices, content, and playlists — from a single self-hosted interface. Prior to version 1.1, authenticated users can cause the server to issue arbitrary HTTP requests to internal services via the uploadFromUrl endp…
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High 7.5
Fediverse Embeds: Unauthenticated SSRF / open proxy via REST media-proxy endpoint
Fediverse Embeds embeds fediverse posts on WordPress sites. Prior to version 1.5.8, Fediverse Embeds registered an unauthenticated REST route ftf/media-proxy (includes/Media_Proxy.php) with permission_callback => __return_true that accepted a base64-encoded U…
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High 8.6CVE-2026-44492 EPSS 12%
Axios: shouldBypassProxy does not recognize IPv4-mapped IPv6 addresses, allowing NO_PROXY bypass (incomplete fix for CVE-2025-62718)
Axios is a promise based HTTP client for the browser and Node.js. Prior to 0.32.0 and 1.16.0, Axios does not normalise IPv4-mapped IPv6 addresses. When NO_PROXY lists an IPv4 address such as 127.0.0.1 or 169.254.169.254, a request URL using the IPv4-mapped IP…
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High 8.6
Spring WS SSRF via unvalidated WS-Addressing reply destinations
When WS-Addressing is used with non-anonymous ReplyTo or FaultTo addresses, Spring WS may initiate outbound connections through configured WebServiceMessageSender instances to destinations taken directly from request headers without verifying that those desti…
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High 8.6CVE-2026-50131 Public exploit
Fedify has an incomplete SSRF mitigation after GHSA-p9cg-vqcc-grcx: validatePublicUrl allows special-use IPv4 ranges
Fedify is a TypeScript library for building federated server apps powered by ActivityPub. Fedify previously addressed SSRF/internal network access in GHSA-p9cg-vqcc-grcx by adding public URL validation before runtime document and media fetching. However, the …
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High 7.6
Server-Side Request Forgery (SSRF) through Dashboard Studio PDF Export in Splunk Enterprise
In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.4.2604.3, 10.3.2512.12, 10.2.2510.14, 10.1.2507.22, and 9.3.2411.132, a low-privileged user that does not hold the "admin" or "power" Splunk ro…
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High 8.8CVE-2026-45504 Public exploit
Microsoft Exchange Server Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
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High 7.3
perfree go-fastdfs-web Installation Endpoint checkServer server-side request forgery
A flaw has been found in perfree go-fastdfs-web up to 1.3.7. Affected is the function checkServer of the file /install/checkServer of the component Installation Endpoint. Executing a manipulation can lead to server-side request forgery. The attack can be exec…
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High 8.3
Server-Side Request Forgery in Altium Platform Design GraphQL Service Allows Information Disclosure
A server-side request forgery (SSRF) vulnerability exists in a GraphQL service component shared by Altium Enterprise Server and Altium 365. An authenticated user can submit a request whose input is treated as a URL by the server and used to issue an outbound …
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High 7.1
HAXcms createSite SSRF Enables Arbitrary File Read
HAX CMS helps manage microsite universe with PHP or NodeJs backends. An authenticated Server-Side Request Forgery (SSRF) vulnerability in versions prior to 26.0.0 allows authenticated users to fetch arbitrary internal or local resources and write the response…
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High 8.7CVE-2026-46391 Public exploit
HAX open-apis: Credential Theft via Server-Side Request Forgery (SSRF) in open-apis
HAX CMS helps manage microsite universe with PHP or NodeJs backends. Starting in version 9.0.1 and prior to version 26.0.0 of @haxtheweb/open-apis, multiple functions conduct substring-only matching to validate hostnames to which basic authorization should be…
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High 7.2
Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns <= 6.1.3 - Authenticated (Author+) Server-Side Request Forgery
The Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 6.1.3 via the `save_ai_generated_image()` function. This makes it possible fo…
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High 7.3
crmeb crmeb_java base64 Qrcode Endpoint RestTemplateUtil.java RestTemplate.getForEntity server-side request forgery
A vulnerability was found in crmeb crmeb_java 1.4. Affected is the function RestTemplate.getForEntity of the file crmeb-common/src/main/java/com/zbkj/common/utils/RestTemplateUtil.java of the component base64 Qrcode Endpoint. The manipulation of the argument …
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High 8.6
Cisco Unified Communications Manager Server-Side Request Forgery Vulnerability
A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct server-side request forgery (SSRF) attacks thr…
KEV Jun 25, 2026 -
High 8.5
Medplum < 5.1.14 SSRF via FHIR Subscription Endpoint
Medplum before 5.1.14 contains a server-side request forgery vulnerability in the subscription worker that allows authenticated users to perform unauthorized internal network requests by creating FHIR Subscription resources with arbitrary endpoint URLs. Attac…
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High 7.0
Nanobot < 0.2.1 SSRF via Microsoft Teams Channel serviceUrl Poisoning
Nanobot prior to version 0.2.1 contains a server-side request forgery vulnerability in the Microsoft Teams channel handler that allows remote attackers to exfiltrate Bot Framework bearer tokens by supplying a forged activity with an attacker-controlled servic…
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High 7.3
SourceCodester SEO Meta Tag Extractor index.php get_headers server-side request forgery
A vulnerability was determined in SourceCodester SEO Meta Tag Extractor 1.0. This vulnerability affects the function get_headers of the file /index.php. This manipulation of the argument url causes server-side request forgery. It is possible to initiate the a…
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High 7.3
horizon921 mcpilot MCP API Call Endpoint route.ts server-side request forgery
A security flaw has been discovered in horizon921 mcpilot 0.1.0. The impacted element is an unknown function of the file client/src/app/api/mcp/call/route.ts of the component MCP API Call Endpoint. The manipulation of the argument serverBaseUrl results in ser…
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High 7.7
FastGPT: SSRF Protection Bypass via `externalFile` in Dataset Preview API
FastGPT is an AI Agent building platform. Prior to 4.15.0-beta1, a Server-Side Request Forgery (SSRF) vulnerability allows an authenticated attacker to bypass the global isInternalAddress network protection and make arbitrary HTTP GET requests to internal net…
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High 7.4
Spatie Laravel Media Library < 11.23.0 SSRF via addMediaFromUrl()
Spatie Laravel Media Library before version 11.23.0 contains a server-side request forgery vulnerability that allows remote attackers to cause the server to issue arbitrary outbound HTTP requests by passing user-controlled URLs to the addMediaFromUrl() method…
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High 7.5
In JetBrains TeamCity before 2026.1, 2025.11.5 unauthenticated SSRF via build status was possible
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High 8.5CVE-2026-46372 Scanner template
SillyTavern: SSRF in SearXNG Search Proxy via Unvalidated baseUrl
SillyTavern is a locally installed user interface that allows users to interact with text generation large language models, image generation engines, and text-to-speech voice models. Prior to 1.18.0, SillyTavern exposes /api/search/searxng, which accepts atta…
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High 7.7
MoviePilot v2 SSRF via /api/v1/system/img/{proxy} Endpoint
MoviePilot v2 contains a server-side request forgery vulnerability in the image proxy endpoint that allows authenticated attackers to request arbitrary URLs by supplying a resource_token cookie and a URL whose domain matches the assembled allowlist. Attackers…
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High 7.3
Shibby Tomato SUBSCRIBE Call miniupnpd send server-side request forgery
A flaw has been found in Shibby Tomato 1.28. The affected element is the function send of the file usr/sbin/miniupnpd of the component SUBSCRIBE Call Handler. This manipulation causes server-side request forgery. The attack may be initiated remotely. This pro…
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High 7.2
mcp-security: Unvalidated URL Fetching (SSRF)
mcp-security provides Security and Authorization support for Model Context Protocol in Spring AI. Prior to 0.1.9, the mcp-security framework fails to implement the mandatory SSRF mitigations outlined in the Model Context Protocol (MCP) security specifications…
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High 7.7
Openshift/router: openshift/router: cloud metadata ssrf via fqdn-typed endpointslice bypasses destination validation
A flaw was found in the OpenShift Router. A user with EndpointSlice write access can exploit this vulnerability by creating a Service backed by an FQDN (Fully Qualified Domain Name) EndpointSlice that resolves to a cloud metadata endpoint. This allows the rou…
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High 7.7
Server-Side Request Forgery (SSRF) in Kibana Leading to Unauthorized Network Access
Server-Side Request Forgery (CWE-918) in Kibana allows authenticated users with connector management privileges to bypass the operator-configured connection allowlist. By configuring a Webhook connector with a crafted target, an attacker can cause Kibana to i…