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
3,822 results · Feed
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High 7.6
OpenClaw < 2026.3.2 - DNS Pinning Bypass via Environment Proxy Configuration in web_fetch
OpenClaw versions prior to 2026.3.2 contain a DNS pinning bypass vulnerability in strict URL fetch paths that allows attackers to circumvent SSRF guards when environment proxy variables are configured. When HTTP_PROXY, HTTPS_PROXY, or ALL_PROXY environment va…
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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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Medium 6.3
frdel/agent0ai agent-zero document_query.py handle_pdf_document server-side request forgery
A weakness has been identified in frdel/agent0ai agent-zero 0.9.7. This affects the function handle_pdf_document of the file python/helpers/document_query.py. This manipulation causes server-side request forgery. The attack is possible to be carried out remot…
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Medium 4.7
taoofagi easegen-admin PPT File PPTUtil.java downloadFile server-side request forgery
A vulnerability was determined in taoofagi easegen-admin up to 8f87936ac774065b92fb20aab55b274a6ea76433. This issue affects the function downloadFile of the file - yudao-module-digitalcourse/yudao-module-digitalcourse-biz/src/main/java/cn/iocoder/yudao/module…
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Medium 4.3
SSRF bypass via IPv4-mapped IPv6 literals
Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to canonicalize IPv4-mapped IPv6 addresses before reserved IP validation which allows an attacker to perform SSRF attacks against internal services via IPv4-mapped IPv6 literals …
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Medium 5.1
Server-Site Request Forgery in Raytha CMS
Raytha CMS is vulnerable to Server-Side Request Forgery in the “Themes - Import from URL” feature. It allows an attacker with high privileges to provide the URL for redirecting server-side HTTP request. This issue was fixed in version 1.4.6.
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High 7.3
vanna-ai vanna Endpoint __init__.py run_sql server-side request forgery
A vulnerability was found in vanna-ai vanna up to 2.0.2. Affected by this vulnerability is the function update_sql/run_sql of the file src/vanna/legacy/flask/__init__.py of the component Endpoint. Performing a manipulation results in server-side request forge…
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Medium 6.3
FlowCI flow-core-x SMTP Host ConfigServiceImpl.java save server-side request forgery
A security flaw has been discovered in FlowCI flow-core-x up to 1.23.01. The impacted element is the function Save of the file core/src/main/java/com/flowci/core/config/service/ConfigServiceImpl.java of the component SMTP Host Handler. The manipulation result…
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High 7.3
glowxq glowxq-oj ProblemCaseController.java uploadTestcaseZipUrl server-side request forgery
A security flaw has been discovered in glowxq glowxq-oj up to 6f7c723090472057252040fd2bbbdaa1b5ed2393. This affects the function uploadTestcaseZipUrl of the file business/business-oj/src/main/java/com/glowxq/oj/problem/controller/ProblemCaseController.java. …
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Medium 5.4
WordPress Gift Up Gift Cards for WordPress and WooCommerce plugin <= 3.1.7 - Server Side Request Forgery (SSRF) vulnerability
Server-Side Request Forgery (SSRF) vulnerability in Gift Up! Gift Up Gift Cards for WordPress and WooCommerce gift-up allows Server Side Request Forgery.This issue affects Gift Up Gift Cards for WordPress and WooCommerce: from n/a through <= 3.1.7.
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Medium 6.4
WordPress Simple Blog Card plugin <= 2.37 - Server Side Request Forgery (SSRF) vulnerability
Server-Side Request Forgery (SSRF) vulnerability in Katsushi Kawamori Simple Blog Card simple-blog-card allows Server Side Request Forgery.This issue affects Simple Blog Card: from n/a through <= 2.37.
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Medium 6.4
WordPress MailerPress plugin <= 1.4.2 - Server Side Request Forgery (SSRF) vulnerability
Server-Side Request Forgery (SSRF) vulnerability in MailerPress Team MailerPress mailerpress allows Server Side Request Forgery.This issue affects MailerPress: from n/a through <= 1.4.2.
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Medium 4.9
WordPress Embed PDF Viewer plugin <= 2.4.7 - Server Side Request Forgery (SSRF) vulnerability
Server-Side Request Forgery (SSRF) vulnerability in Andy Fragen Embed PDF Viewer embed-pdf-viewer allows Server Side Request Forgery.This issue affects Embed PDF Viewer: from n/a through <= 2.4.7.
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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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Low 1.7
@backstage/plugin-auth-backend: SSRF in experimental CIMD metadata fetch
Backstage is an open framework for building developer portals. Prior to 0.27.1, a Server-Side Request Forgery (SSRF) vulnerability exists in @backstage/plugin-auth-backend when auth.experimentalClientIdMetadataDocuments.enabled is set to true. The CIMD metada…
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High 7.7
OpenCTI has a Semi-Blind SSRF via Unvalidated External URL in Data Ingestion Feature
OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 6.8.16, the OpenCTI platform’s data ingestion feature accepts user-supplied URLs without validation and uses the Axios HTTP client with its default c…
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Medium 6.3
648540858 wvp-GB28181-pro IP Address ABLMediaNodeServerService.java getDownloadFilePath server-side request forgery
A vulnerability was detected in 648540858 wvp-GB28181-pro up to 2.7.4-20260107. Affected by this vulnerability is the function getDownloadFilePath of the file /src/main/java/com/genersoft/iot/vmp/media/abl/ABLMediaNodeServerService.java of the component IP Ad…
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Medium 6.3
zyddnys manga-image-translator Translate Endpoints request_extraction.py to_pil_image server-side request forgery
A vulnerability was determined in zyddnys manga-image-translator up to beta-0.3. The affected element is the function to_pil_image of the file manga-image-translator-main/server/request_extraction.py of the component Translate Endpoints. This manipulation cau…
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High 7.8
2FAuth has Blind SSRF in image parameter allows internal network access and more
2FAuth is a web app to manage Two-Factor Authentication (2FA) accounts and generate their security codes. Prior to 6.1.0, a blind SSRF vulnerability exists in 2FAuth that allows authenticated users to make arbitrary HTTP requests from the server to internal n…
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Medium 6.3
Woahai321 ListSync JSON api_server.py requests.post server-side request forgery
A vulnerability has been found in Woahai321 ListSync up to 0.6.6. This issue affects the function requests.post of the file list-sync-main/api_server.py of the component JSON Handler. The manipulation leads to server-side request forgery. The attack is possib…
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Medium 5.3
ha-mcp OAuth 2.1 DCR mode enables network reconnaissance via an error oracle
ha-mcp is a Home Assistant MCP Server. Prior to 7.0.0, the ha-mcp OAuth consent form (beta feature) accepts a user-supplied ha_url and makes a server-side HTTP request to {ha_url}/api/config with no URL validation. An unauthenticated attacker can submit arbit…
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High 8.3
SiYuan has a Full-Read SSRF via /api/network/forwardProxy
SiYuan is a personal knowledge management system. Prior to 3.6.0, the /api/network/forwardProxy endpoint allows authenticated users to make arbitrary HTTP requests from the server. The endpoint accepts a user-controlled URL and makes HTTP requests to it, retu…
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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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Low 3.0
Blind SSRF on OpenProject instance via webhooks
OpenProject is an open-source, web-based project management software. Prior to 17.2.0, OpenProject SMTP test endpoint (POST /admin/settings/mail_notifications) accepts arbitrary host and port values and exhibits measurable differences in response behaviour de…
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Medium 5.3
SSRF in Quill via unvalidated URL from Apple notarization log retrieval
Quill provides simple mac binary signing and notarization from any platform. Quill before version v0.7.1 contains a Server-Side Request Forgery (SSRF) vulnerability when attempting to fetch the Apple notarization submission logs. Exploitation requires the abi…
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Medium 5.0
Frappe: Possible SSRF by any authenticated user
Frappe is a full-stack web application framework. Prior to 14.100.1, 15.100.0, and 16.6.0, a malicious user could send a crafted request to an endpoint which would lead to the server making an HTTP call to a service of the user's choice. This vulnerability is…
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Medium 5.5
Adobe Commerce | Server-Side Request Forgery (SSRF) (CWE-918)
Adobe Commerce versions 2.4.9-alpha3, 2.4.8-p3, 2.4.7-p8, 2.4.6-p13, 2.4.5-p15, 2.4.4-p16 and earlier are affected by a Server-Side Request Forgery (SSRF) vulnerability that could result in a Security feature bypass. A high-privileged attacker could exploit t…
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Medium 5.5
Adobe Commerce | Server-Side Request Forgery (SSRF) (CWE-918)
Adobe Commerce versions 2.4.9-alpha3, 2.4.8-p3, 2.4.7-p8, 2.4.6-p13, 2.4.5-p15, 2.4.4-p16 and earlier are affected by a Server-Side Request Forgery (SSRF) vulnerability that could result in a Security feature bypass. A high-privileged attacker could exploit t…
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High 7.5
An issue pertaining to CWE-918: Server-Side Request Forgery was discovered in Sunbird-Ed SunbirdEd-portal v1.13.4. This…
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High 7.1
Flowise affected by Server-Side Request Forgery (SSRF) in HTTP Node Leading to Internal Network Access
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.0.13, Flowise exposes an HTTP Node in AgentFlow and Chatflow that performs server-side HTTP requests using user-controlled URLs. By default, there are no restr…
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High 7.7
LinkAce affected by SSRF via link creation: NoPrivateIpRule not applied to LinkStoreRequest
LinkAce is a self-hosted archive to collect website links. When a user creates a link via POST /links, the server fetches HTML metadata from the provided URL (LinkRepository::create() calls HtmlMeta::getFromUrl()). The LinkStoreRequest validation rules do not…
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High 8.2
MCP Atlassian has SSRF via unvalidated X-Atlassian-Jira-Url / X-Atlassian-Confluence-Url headers
MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to version 0.17.0, an unauthenticated attacker who can reach the mcp-atlassian HTTP endpoint can force the server process to make outbound HTTP requests…
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High 8.8CVE-2026-26118 Public exploit
Azure MCP Server Tools Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Azure MCP Server allows an authorized attacker to elevate privileges over a network.
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High 7.5
Azure IOT Explorer Spoofing Vulnerability
Server-side request forgery (ssrf) in Azure IoT Explorer allows an unauthorized attacker to perform spoofing over a network.
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Medium 6.4
Server-Side Request Forgery (SSRF) in SAP NetWeaver Application Server for ABAP
SAP NetWeaver Application Server for ABAP provides an ABAP Report for testing purposes, which allows to send HTTP requests to arbitrary internal or external endpoints. The report is therefore vulnerable to Server-Side Request Forgery (SSRF). Successful exploi…
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High 7.5CVE-2026-26801 Public exploit
pdfmake is vulnerable to server-side request forgery (SSRF)
Server-Side Request Forgery (SSRF) vulnerability in pdfmake versions 0.3.0-beta.2 through 0.3.5 allows a remote attacker to obtain sensitive information via the src/URLResolver.js component. The fix was released in version 0.3.6 which introduces the setUrlAcc…
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High 7.1
SSRF Protection Bypass in vLLM
vLLM is an inference and serving engine for large language models (LLMs). The SSRF protection fix for CVE-2026-24779 add in 0.15.1 can be bypassed in the load_from_url_async method due to inconsistent URL parsing behavior between the validation layer and the …
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High 7.5
Server-Side Request Forgery (SSRF) in ikea dirigera
A server-side request forgery (SSRF) vulnerability in IKEA Dirigera v2.866.4 allows an attacker to exfiltrate private keys by sending a crafted request.
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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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Medium 6.3
Bytedesk SpringAIGiteeRestController SpringAIGiteeRestService.java getModels server-side request forgery
A vulnerability was detected in Bytedesk up to 1.3.9. Affected is the function getModels of the file source-code/src/main/java/com/bytedesk/ai/springai/providers/gitee/SpringAIGiteeRestService.java of the component SpringAIGiteeRestController. Performing a ma…