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
3,819 results · Feed
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High 8.6
AVideo has an incomplete fix for CVE-2026-33039 (SSRF)
WWBN AVideo is an open source video platform. In versions 29.0 and below, an incomplete SSRF fix in AVideo's LiveLinks proxy adds `isSSRFSafeURL()` validation but leaves DNS TOCTOU vulnerabilities where DNS rebinding between validation and the actual HTTP req…
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High 8.9
Server-Side Request Forgery in GitHub Enterprise Server allowed extraction of sensitive environment variables via timing side-channel attack
A server-side request forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed an attacker to extract sensitive environment variables from the instance through a timing side-channel attack against the notebook rendering service. Wh…
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Medium 6.3
Bagisto Downloadable Link copy server-side request forgery
A vulnerability was found in Bagisto up to 2.3.15. Affected is the function copy of the component Downloadable Link Handler. The manipulation results in server-side request forgery. The attack may be launched remotely. The exploit has been made public and cou…
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Medium 4.1
FreeScout vulnerable to SSRF via IMAP/SMTP Connection Test Endpoints
FreeScout is a free self-hosted help desk and shared mailbox. Versions prior to 1.8.213 have a Server-Side Request Forgery (SSRF) vulnerability in the IMAP/SMTP connection test functionality of FreeScout's `MailboxesController`. Three AJAX actions `fetch_test…
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High 7.3
Glances IP Plugin has SSRF via public_api that leads to credential leakage
Glances is an open-source system cross-platform monitoring tool. Prior to version 4.5.4, a Server-Side Request Forgery (SSRF) vulnerability exists in the Glances IP plugin due to improper validation of the public_api configuration parameter. The value of publ…
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High 7.6
OpenClaw < 2026.3.31 - Server-Side Request Forgery via Unguarded fetch() in Marketplace Plugin Download
OpenClaw before 2026.3.31 contains a server-side request forgery vulnerability in the marketplace plugin download functionality that allows remote attackers to make arbitrary network requests. Attackers can exploit unguarded fetch() calls to access internal r…
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High 7.6
OpenClaw < 2026.3.31 - Server-Side Request Forgery via Marketplace Plugin Download Redirect
OpenClaw before 2026.3.31 contains a server-side request forgery vulnerability in the marketplace plugin download functionality that allows attackers to access internal resources by following unvalidated redirects. The marketplace.ts module fails to restrict …
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High 7.5
LMDeploy Vulnerable to Server-Side Request Forgery (SSRF) via Vision-Language Image Loading
LMDeploy is a toolkit for compressing, deploying, and serving large language models. Versions prior to 0.12.3 have a Server-Side Request Forgery (SSRF) vulnerability in LMDeploy's vision-language module. The `load_image()` function in `lmdeploy/vl/utils.py` f…
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Medium 5.8
Vexa Webhook Feature has a SSRF Vulnerability
Vexa is an open-source, self-hostable meeting bot API and meeting transcription API. Prior to 0.10.0-260419-1910, the Vexa webhook feature allows authenticated users to configure an arbitrary URL that receives HTTP POST requests when meetings complete. The ap…
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High 7.7
Vvveb < 1.0.8.1 SSRF via oEmbedProxy
Vvveb prior to 1.0.8.1 contains a server-side request forgery vulnerability in the oEmbedProxy action of the editor/editor module where the url parameter is passed directly to getUrl() via curl without scheme or destination validation. Authenticated backend u…
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Medium 6.3
Qibo CMS headers server-side request forgery
A vulnerability was determined in Qibo CMS 1.0. Affected by this issue is some unknown functionality of the file /index/image/headers. Executing a manipulation of the argument starts can lead to server-side request forgery. The attack can be launched remotely…
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High 7.3
moxi624 Mogu Blog v2 Picture Storage Service LocalFileServiceImpl.java LocalFileServiceImpl.uploadPictureByUrl server-side request forgery
A security vulnerability has been detected in moxi624 Mogu Blog v2 up to 5.2. Affected by this vulnerability is the function LocalFileServiceImpl.uploadPictureByUrl of the file mogu_picture/src/main/java/com/moxi/mogublog/picture/service/impl/LocalFileService…
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Medium 6.3
langgenius dify ApiBasedToolSchemaParser parser.py parse_openai_plugin_json_to_tool_bundle server-side request forgery
A flaw has been found in langgenius dify up to 1.13.3. This issue affects the function parse_openai_plugin_json_to_tool_bundle of the file api/core/tools/utils/parser.py of the component ApiBasedToolSchemaParser. Executing a manipulation of the argument url c…
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Medium 6.3
langgenius dify ApiToolManageService api_tools_manage_service.py get_api_tool_provider_remote_schema server-side request forgery
A vulnerability was detected in langgenius dify up to 0.6.9. This vulnerability affects the function get_api_tool_provider_remote_schema of the file api/services/tools/api_tools_manage_service.py of the component ApiToolManageService. Performing a manipulatio…
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Medium 6.3
TransformerOptimus SuperAGI WebScraperTool webpage_extractor.py extract_with_lxml server-side request forgery
A security vulnerability has been detected in TransformerOptimus SuperAGI up to 0.0.14. This affects the function extract_with_bs4/extract_with_3k/extract_with_lxml of the file superagi/helper/webpage_extractor.py of the component WebScraperTool. Such manipul…
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High 7.3
modelscope agentscope _agent_base.py _process_audio_block server-side request forgery
A weakness has been identified in modelscope agentscope up to 1.0.18. This vulnerability affects the function _process_audio_block of the file src/agentscope/agent/_agent_base.py. Executing a manipulation of the argument url can lead to server-side request fo…
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High 7.3
modelscope agentscope Internal Service _common.py _get_bytes_from_web_url server-side request forgery
A security flaw has been discovered in modelscope agentscope up to 1.0.18. This affects the function _get_bytes_from_web_url of the file src/agentscope/_utils/_common.py of the component Internal Service. Performing a manipulation results in server-side reque…
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High 7.3
modelscope agentscope Cloud Metadata Endpoint _openai_tools.py openai_audio_to_text server-side request forgery
A vulnerability was identified in modelscope agentscope up to 1.0.18. Affected by this issue is the function _parse_url/prepare_image/openai_audio_to_text of the file src/agentscope/tool/_multi_modality/_openai_tools.py of the component Cloud Metadata Endpoin…
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Medium 6.3
vibrantlabsai RAGAS Collections util.py _try_process_url server-side request forgery
A security flaw has been discovered in vibrantlabsai RAGAS up to 0.4.3. The affected element is the function _try_process_local_file/_try_process_url of the file src/ragas/metrics/collections/multi_modal_faithfulness/util.py of the component Collections Modul…
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Medium 6.3
PHPEMS Instant Exam Creation exams.master.php temppage server-side request forgery
A vulnerability was detected in PHPEMS 11.0. This affects the function temppage of the file /app/exam/controller/exams.master.php of the component Instant Exam Creation Handler. The manipulation of the argument uploadfile results in server-side request forger…
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High 7.7
Movary has Authenticated SSRF via Jellyfin Server URL Verification that Allows Internal Network Probing
Movary is a self hosted web app to track and rate a user's watched movies. Prior to version 0.71.1, an ordinary authenticated user can trigger server-side requests to arbitrary internal targets through `POST /settings/jellyfin/server-url-verify`. The endpoint…
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Medium 6.4
NocoBase has SSRF in Workflow HTTP Request and Custom Request Plugins
NocoBase is an AI-powered no-code/low-code platform for building business applications and enterprise solutions. Prior to version 2.0.37, NocoBase's workflow HTTP request plugin and custom request action plugin make server-side HTTP requests to user-provided …
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High 8.3
OpenHarness SSRF via web_fetch and web_search
OpenHarness before commit bd4df81 contains a server-side request forgery vulnerability in the web_fetch and web_search tools that allows attackers to access private and localhost HTTP services by manipulating tool parameters without proper validation of targe…
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Medium 6.3
prasathmani TinyFileManager File Upload filemanager.php server-side request forgery
A vulnerability was determined in prasathmani TinyFileManager up to 2.6. Affected by this vulnerability is an unknown functionality of the file /filemanager.php?p= ajax=true&type=upload of the component File Upload Handler. This manipulation of the argument u…
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Medium 6.9
Server-Side Request Forgery in GREENmod
GREENmod uses named pipes for communication between plugins, the web portal, and the system service, but the access control lists for these pipes are configured incorrectly. This allows an attacker to communicate with the stream and upload any XML or JSON fil…
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Medium 5.3
Vault Vulnerable to Server-Side Request Forgery in ACME Challenge Validation via Attacker-Controlled DNS
Vault’s PKI engine’s ACME validation did not reject local targets when issuing http-01 and tls-alpn-01 challenges. This may lead to these requests being sent to local network targets, potentially leading to information disclosure. Fixed in Vault Community Edi…
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High 7.5
Craftql vulnerable to Server-Side Request Forgery
Craftql v1.3.7 and before is vulnerable to Server-Side Request Forgery (SSRF) which allows an attacker to execute arbitrary code via the vendor/markhuot/craftql/src/Listeners/GetAssetsFieldSchema.php file
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Medium 4.1
Weblate: SSRF via the webhook add-on using unprotected fetch_url()
Weblate is a web based localization tool. In versions prior to 5.17, the webhook add-on did not utilize existing SSRF protections. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can disable the webhook add-on a…
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Medium 5.0
Weblate: SSRF via Project-Level Machinery Configuration
Weblate is a web based localization tool. In versions prior to 5.17, a user with the project.edit permission (granted by the per-project "Administration" role) can configure machine translation service URLs pointing to arbitrary internal network addresses. Du…
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Medium 5.0
Weblate: Authenticated SSRF via redirect bypass of ALLOWED_ASSET_DOMAINS in screenshot URL uploads
Weblate is a web based localization tool. In versions prior to 5.17, the ALLOWED_ASSET_DOMAINS setting applied only to the first issued requests and didn't restrict possible redirects. This issue has been fixed in version 5.17.
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High —
Novu has SSRF via conditions filter webhook bypasses validateUrlSsrf() protection
## Summary The conditions filter webhook at `libs/application-generic/src/usecases/conditions-filter/conditions-filter.usecase.ts` line 261 sends POST requests to user-configured URLs using raw `axios.post()` with no SSRF validation. The HTTP Request workflow…
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High 8.6
Jellyfin: Potential SSRF + Arbitrary file read via LiveTV M3U tuner
Jellyfin is an open source self hosted media server. Versions prior to 10.11.7 contain a vulnerability chain in the LiveTV M3U tuner endpoint (POST /LiveTv/TunerHosts), where the tuner URL is not validated, allowing local file read via non-HTTP paths and Serv…
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High 8.6CVE-2026-34160 Public exploit
Chamilo LMS: Unauthenticated SSRF via PENS Plugin allows attacker to probe internal network and reach cloud metadata services
Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, the PENS (Package Exchange Notification Services) plugin endpoint at public/plugin/Pens/pens.php is accessible without authentication and accepts a user-controlled pack…
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High 7.2CVE-2026-33715 Public exploit
Chamilo LMS has Unauthenticated SSRF and Open Email Relay via install.ajax.php test_mailer action
Chamilo LMS is an open-source learning management system. In version 2.0-RC.2, the file public/main/inc/ajax/install.ajax.php is accessible without authentication on fully installed instances because, unlike other AJAX endpoints, it does not include the globa…
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Medium 4.1
A server-side request forgery (ssrf) vulnerability [CWE-918] vulnerability in Fortinet FortiSOAR PaaS 7.6.4, FortiSOAR …
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Medium 4.3
Open WebUI has Blind Server Side Request Forgery in its Image Edit Functionality
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Versions 0.7.2 and below contain a Blind Server Side Request Forgery in the functionality that allows editing an image via a prompt. The affected function perfo…
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Medium 5.0
MaxKB: SSRF via sandbox network hook bypass
MaxKB is an open-source AI assistant for enterprise. In versions 2.7.1 and below, sandbox network protection can be bypassed by using socket.sendto() with the MSG_FASTOPEN flag. This allows authenticated user with tool-editing permissions to reach internal se…
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High 8.5
Webkul Krayin CRM has Server-Side Request Forgery (SSRF)
A Server-Side Request Forgery (SSRF) in the /settings/webhooks/create component of Webkul Krayin CRM v2.2.x allows attackers to scan internal resources via supplying a crafted POST request.
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Medium 4.7
HummerRisk Video File Download URL ServerService.java ServerService.addServer server-side request forgery
A vulnerability was identified in HummerRisk up to 1.5.0. This vulnerability affects the function ServerService.addServer of the file ServerService.java of the component Video File Download URL Handler. Such manipulation of the argument streamIp leads to serv…
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Low 3.5
EspoCRM: SSRF via DNS Rebinding in Attachment fromImageUrl Endpoint Allows Internal Network Access
EspoCRM is an open source customer relationship management application. In versions 9.3.3 and below, the POST /api/v1/Attachment/fromImageUrl endpoint is vulnerable to Server-Side Request Forgery (SSRF) via a DNS rebinding (TOCTOU) condition. Host validation …