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
3,787 results · Feed
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Medium 4.3
Posta before v0.18.0 SSRF via Webhook URL
Posta before v0.18.0 contains a server-side request forgery vulnerability that allows authenticated users with edit rights to make the backend send POST requests to internal destinations by creating webhooks with arbitrary URLs. Attackers can target loopback,…
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Medium 5.3
buku through 5.1.1 SSRF via bukuserver fetch_data and network_handle API
Buku (bukuserver) through 5.1.1 contains an unauthenticated server-side request forgery vulnerability that allows remote attackers to make the server request internal hosts by supplying a url parameter to /api/fetch_data or /api/network_handle. Attackers can …
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High 7.7
SuiteCRM: isSelfRequest() bypass via substring match allows SSRF to internal services
SuiteCRM is an open-source, enterprise-ready Customer Relationship Management (CRM) software application. Prior to 7.15.2 and 8.10.2, the SSRF protection added in 7.15.1 uses a substring comparison in isSelfRequest() rather than hostname equality. The affecte…
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High 7.1
SuiteCRM: Non-admin user creates SchedulersJob: SSRF via cron
SuiteCRM is an open-source, enterprise-ready Customer Relationship Management (CRM) software application. Prior to 7.15.2 and 8.10.2, the V8 module API lacks module-level authorization and permits a low-privileged user to create SchedulersJobs records with at…
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Medium 6.3
Symfony: Ip Constraint public/private Modes Accept IPv4-Mapped and IPv4-Compatible IPv6 Addresses allowing SSRF Filter Bypass
The Symfony Validator component IpValidator incompletely classifies internal addresses in the filtered modes of the Ip constraint, so some internal addresses are accepted as public, which can lead to Server-Side Request Forgery (SSRF) in Symfony versions prio…
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Medium 5.3
Server side request forgery vulnerability exists in the DLP on-prem extensions version 11.13.1 and earlier allows the f…
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High 8.1
Apache OFBiz: Server-side request forgery in SurveyWrapper
Server-Side Request Forgery in SurveyWrapper in Apache OFBiz 24.09 before 24.09.08 on all platforms allows an authenticated back-office user holding catalog permission to cause the server to fetch and render attacker-controlled URLs — including internal netwo…
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Medium 4.3
Apache OFBiz: Unfiltered server-side URL fetch in webtools viewdatafile
Server-Side Request Forgery in ViewDataFile in Apache OFBiz 24.09 before 24.09.08 on all platforms allows a remote authenticated attacker holding only the base webtools permissions (OFBTOOLS_VIEW, WEBTOOLS_VIEW) to cause the server to issue arbitrary outbound…
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Low 2.3
Symfony: NoPrivateNetworkHttpClient Does Not Pin the Checked IP of Cached Hosts, Letting DNS Rebinding Enumerate Internal Ports (Incomplete Fix for CVE-2024-50342)
The Symfony HttpClient component NoPrivateNetworkHttpClient does not pin the checked IP address of cached hosts, allowing for DNS rebinding to bypass private network restrictions, resulting in enumeration of internal hosts and ports in Symfony versions prior …
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Medium 5.0
FV Player < 7.5.56.7212 - Contributor+ SSRF via Media Library Import
The FV Flowplayer Video Player WordPress plugin before 7.5.56.7212 does not validate a user-supplied URL before performing a server-side fetch whose response body is stored and served publicly, allowing users with Contributor-level access and above to perform…
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Medium 4.9
Webmin: SSRF exploit in Upload and Download and File Manager modules
Webmin is a web-based system administration tool for Unix-like servers. Prior to 2.652, untrusted users with access to the File Manager or Upload and Download modules can direct Webmin's server-side URL download functionality to non-public network addresses b…
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Critical 9.3
Readest: Unauthenticated SSRF / open request proxy in /api/opds/proxy
Readest is a modern, feature-rich ebook reader designed for seamless cross-platform access and an intuitive reading experience. Prior to 0.11.10, the unauthenticated /api/opds/proxy route in apps/readest-app/src/app/api/opds/proxy/route.ts accepted an attacke…
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Medium 5.8
draw.io: Incomplete SSRF blocklist in `ProxyServlet` / `Utils.sanitizeUrl`: RFC 6598 CGNAT range `100.64.0.0/10` is not blocked -> server-side request to internal CGNAT hosts
draw.io is a configurable diagramming and whiteboarding application. Prior to 30.3.8, the optional /proxy endpoint contains an incomplete server-side request forgery blocklist. When the endpoint is enabled, the URL validator does not reject the RFC 6598 share…
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Medium 5.8
Trawl 1.5.0 before 1.10.0 SSRF via IPv4-mapped IPv6 MCP Policy Bypass
Trawl 1.5.0 before 1.10.0 contains a server-side request forgery vulnerability that allows unauthenticated attackers to bypass the MCP outbound URL policy using IPv4-mapped IPv6 addresses. Attackers can supply hex-normalized addresses like ::ffff:7f00:1 direc…
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High 7.3
DataLinkDC Dinky flink_web Proxy Endpoint FlinkWebURITemplateProxyServlet.java FlinkWebURITemplateProxyServlet.getNewTargetUri server-side request forgery
A flaw has been found in DataLinkDC Dinky up to 1.2.5. This vulnerability affects the function FlinkWebURITemplateProxyServlet.getNewTargetUri of the file dinky-admin/src/main/java/org/dinky/utils/FlinkWebURITemplateProxyServlet.java of the component flink_we…
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Medium 6.3
InfiniFlow RAGFlow Seafile Connector seafile_connector.py _account_get server-side request forgery
A vulnerability has been found in InfiniFlow RAGFlow up to 0.27.3. Affected by this issue is the function _account_get of the file common/data_source/seafile_connector.py of the component Seafile Connector. Such manipulation of the argument seafile_url leads …
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Medium 5.0
Oqtane Framework before 10.3.0 SSRF via File Upload From URL
Oqtane Framework before 10.3.0 contains a server-side request forgery vulnerability in the UploadFile endpoint of FileController.cs that allows authenticated registered users to make the server fetch arbitrary URLs by supplying a caller-controlled url paramet…
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Medium 6.5
easyVoice before 0.0.23 SSRF via openaiBaseUrl in TTS API
easyVoice before 0.0.23 contains a server-side request forgery vulnerability that allows unauthenticated attackers to make the server send POST requests by supplying openaiBaseUrl with useLLM enabled. Attackers can target loopback and internal services throug…
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High 8.4
Multiple vulnerabilities in Coupa’s Total Spend Management Platform
Server-side request forgery (SSRF) vulnerability in the Coupa Supplier Portal SaaS platform, specifically in the document conversion functionality available in the ‘Contracts > Templates’ section. The vulnerability is due to insufficient validation of referen…
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High 7.1
Stape Conversion Tracking 2.3.0 - 2.3.10 - Unauthenticated SSRF and Same-Origin XSS via Proxy Sub-Path
The Stape Conversion Tracking WordPress plugin before 2.3.11 does not validate the sub-path appended to its same-origin proxy's upstream endpoint, allowing unauthenticated visitors to redirect the server-side request to an arbitrary host and have the response…
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Medium 4.1
PowerPack Addons for Elementor 2.10.0 - 3.1.2 - Contributor+ SSRF via Charts Widget CSV Import
The PowerPack Addons for Elementor: Widgets, Form Styler and Templates WordPress plugin before 3.1.3 does not validate a user-supplied URL before using it in a server-side HTTP request, which could allow users with the contributor role and above to perform Se…
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High 8.2
MLflow get-artifacts Server-Side Request Forgery Information Disclosure Vulnerability
MLflow get-artifacts Server-Side Request Forgery Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of MLflow. Authentication is not required to exploit this vulnerabili…
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Medium 4.3
ArcReel Provider Test-Connection Endpoint test server-side request forgery
A vulnerability has been found in ArcReel 0.32.0/0.33.0/0.34.0. The impacted element is an unknown function of the file /api/v1/providers/{id}/test of the component Provider Test-Connection Endpoint. The manipulation leads to server-side request forgery. Remo…
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High 8.1
Server-side request forgery in the Active Directory credential validation in Devolutions Server 2026.3.12.0 and earlier…
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High 8.1
Server-side request forgery in the Jira ticketing filter lookup in Devolutions Server 2026.2.22.0 and earlier allows an…
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High 8.3
Server-Side Request Forgery in Tapo Cloud MQTT Proxy
The Tapo Cloud MQTT proxy contains a server-side request forgery (SSRF) vulnerability because it accepts a user-controlled host value without sufficient input validation. An attacker may exploit this vulnerability to cause the Tapo Cloud service to send reque…
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Medium 5.3
Server-side request forgery via SpatialReference string input
An issue was discovered in Django 6.1 before 6.1.3, 6.0 before 6.0.10, and 5.2 before 5.2.19. `django.contrib.gis.gdal.SpatialReference` (and related `transform()` methods and `srs`/`srid` setters) do not restrict GDAL’s file and network access when parsing s…
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Medium 5.3
Server-side request forgery via crs member of GeoJSON geometries
An issue was discovered in Django 6.1 before 6.1.3, 6.0 before 6.0.10, and 5.2 before 5.2.19. `django.contrib.gis.gdal.OGRGeometry` does not restrict external coordinate reference system definitions in GeoJSON input, which allows remote attackers to cause ser…
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High 7.7
Label Studio before 1.23.2 SSRF and Token Disclosure via Image Export Downloads
Label Studio before 1.23.2 (label-studio-sdk before 2.1.2) contains a server-side request forgery vulnerability that allows authenticated users to read internal URLs through image-bearing export formats. Attackers can import tasks with data.image pointing at …
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Medium 5.3
AzuraCast before 0.24.0 SSRF Filter Bypass via Webhook Connectors
AzuraCast before 0.24.0 contains a server-side request forgery vulnerability that allows station users with WebHooks permission to bypass the UserUrlFilter guard via the Mastodon, Telegram, GroupMe, and RadioReg connectors. Attackers can set instance_url, api…
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Medium 4.3
SurrealDB 3.1.0 before 3.3.0 SSRF via Port-Specific --deny-net Host Aliasing Bypass
SurrealDB 3.1.0 before 3.3.0 contains a server-side request forgery vulnerability in network-capability matching because port-specific --deny-net rules (HOST:PORT or IP:PORT) match only a literal host string, while the resolved-IP check discards the port. Aut…
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Medium 4.1
SurrealDB from 3.1.0 before 3.3.0 SSRF via JWKS Implicit Default Port Bypass
SurrealDB from 3.1.0 before 3.3.0 contains a server-side request forgery vulnerability that allows database Owners to bypass port-specific deny-net rules by using JWKS URLs with implicit default ports. Attackers can configure a JWT or record access method who…
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Low 3.3
SurrealDB 3.2.0 before 3.3.0 SSRF Guard Bypass via IPv6 Transition Addresses
SurrealDB from 3.2.0 before 3.3.0 contains a server-side request forgery vulnerability in the FilteringResolver is_private_ip check that fails to unwrap NAT64, 6to4, and Teredo IPv6 addresses. Authenticated users triggering outbound HTTP requests via SurrealQ…
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Medium 5.3
Server-Side Request Forgery in extension "Mail" (mail)
Content of external URL mails, their stylesheets and images to embed is fetched by the server without validating the target host. Backend users with access to the mail module can make the server send requests to hosts in the internal network.
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Critical 9.2
Unauthenticated SSRF with MNESTIX_BACKEND_API_KEY disclosure in Eclipse Mnestix Browser server actions for configured Infrastructures
In Eclipse Mnestix Browser versions 1.6.0 up until but excluding 2.3.0 it was possible for an unauthenticated attacker to exfiltrate the MNESTIX_BACKEND_API_KEY for all configured Infrastructures.
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Medium 5.8
Gallery for Social Photo <= 1.0.0.41 - Unauthenticated SSRF via next_url Parameter
The Gallery for Social Photo WordPress plugin through 1.0.0.41 does not validate a user-supplied URL before using it to perform a server-side request, allowing unauthenticated attackers to make the server issue requests to arbitrary internal hosts and read th…
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Medium 5.3
AndyFactory newspaper4k Image Extractor image_extractor.py Article.parse server-side request forgery
A security vulnerability has been detected in AndyFactory newspaper4k up to 0.9.6. This affects the function Article.parse of the file newspaper/extractors/image_extractor.py of the component Image Extractor. Such manipulation leads to server-side request for…
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Critical 9.1
CVE-2026-120630
CrewAI contains an SSRF vulnerability caused by its SSRF guard and HTTP client, which both miss malicious content in URLs by checking opposite content passed to it, enabling any request that injects a malicious URL to perform SSRF, such as with the ScrapWebsi…
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High 7.6
Rancher meta proxy allowlist bypass leading to server-side request forgery
A security vulnerability exists in the SUSE Rancher Manager meta proxy endpoint (/meta/proxy). This endpoint is intended to forward requests only to destinations that appear on a configured allowlist. The allowlist decision was evaluated in a place where it…
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Medium 5.4
Chainlit 2.12.0 SSRF via Semicolon Path Segment in MCP allowed_urls
Chainlit 2.12.0 contains a server-side request forgery vulnerability that allows unauthenticated attackers to bypass path-scoped MCP allowed_urls entries because validate_mcp_url does not reject the semicolon character. Attackers can submit MCP URLs with '..;…