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
1,872 results · Clear filters · Feed
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Medium 6.3
1Panel-dev CordysCRM Third Party Endpoint TokenService.java server-side request forgery
A vulnerability was found in 1Panel-dev CordysCRM up to 1.4.1. This issue affects some unknown processing of the file backend/crm/src/main/java/cn/cordys/crm/integration/sso/service/TokenService.java of the component Third Party Endpoint. Performing a manipul…
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Medium 6.3
Sipeed PicoClaw web_fetch web.go isPrivateOrRestrictedIP server-side request forgery
A weakness has been identified in Sipeed PicoClaw up to 0.2.9. Impacted is the function isPrivateOrRestrictedIP of the file pkg/tools/integration/web.go of the component web_fetch. This manipulation causes server-side request forgery. The attack can be initia…
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Medium 6.3
zhayujie CowAgent web_fetch.py WebFetch.execute server-side request forgery
A vulnerability was determined in zhayujie CowAgent up to 2.1.1. This affects the function WebFetch.execute of the file agent/tools/web_fetch/web_fetch.py. Executing a manipulation of the argument url can lead to server-side request forgery. The attack may be…
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Medium 6.3
nextlevelbuilder GoClaw web_fetch web_shared.go isPrivateIP server-side request forgery
A security vulnerability has been detected in nextlevelbuilder GoClaw up to 3.15.0-beta.32. This affects the function CheckSSRF/isPrivateIP of the file internal/tools/web_shared.go of the component web_fetch. Such manipulation leads to server-side request for…
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Medium 5.8
SurrealDB before 2.2.2 SSRF via HTTP Redirect Bypass
SurrealDB before 2.2.2 fails to validate HTTP redirects in http functions, allowing authenticated users to bypass deny-net restrictions by redirecting to blocked IP addresses. Attackers can host a public server that redirects to denied network targets, enabli…
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Medium 4.9
Statamic: Server-Side Request Forgery via Glide (DNS rebinding)
Statamic is a Laravel and Git powered content management system (CMS). Prior to 5.73.24 and 6.20.1, the Glide image proxy's URL validation in src/Imaging/RemoteUrlValidator.php and src/Imaging/GuzzleAdapter.php could be bypassed using DNS rebinding. The remot…
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Medium 6.3
AstrBotDevs AstrBot Plugin Update plugin.py update_all_plugins server-side request forgery
A vulnerability was detected in AstrBotDevs AstrBot up to 4.25.2. This affects the function update_plugin/update_all_plugins of the file astrbot/dashboard/routes/plugin.py of the component Plugin Update Handler. The manipulation of the argument download_url/d…
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Medium 5.8
Dendrite 0.13.8 SSRF via Unauthenticated Legacy Media Download Endpoint
Dendrite through 0.13.8 contains a server-side request forgery vulnerability that allows unauthenticated attackers to cause the server to open outbound TLS connections to arbitrary hosts and ports by supplying an unvalidated serverName parameter to the legacy…
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Medium 5.0
OpenClaw 2026.4.20 < 2026.5.28 Policy Bypass via Media Upload
OpenClaw 2026.4.20 before 2026.5.28 contain a policy bypass in the QQBot media upload feature. A lower-trust caller or configured input path could cause the media upload to reach network destinations that should have been blocked by OpenClaw policy (server-si…
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Medium 6.8
BigBlueButton: Presentation URL Security Hardening
BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, the presentation URL validation did not properly restrict access to site local and link local addresses. The redirect following logic now pins resolved IPs. This issue is fixed in version 3.0…
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Medium 6.2
Wekan: Server-Side Request Forgery (SSRF) via webhook integration URLs
Wekan is open source kanban built with Meteor. Prior to 9.32, Wekan webhook integration URLs in models/integrations.js are stored from user input and later fetched by server/notifications/outgoing.js without applying the existing validateAttachmentUrl() priva…
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Medium 6.4
9Router: Kiro region injection allows authenticated SSRF with Authorization header forwarding
9Router is an AI router & token saver. Prior to 0.5.6, the Kiro API-key validation endpoint POST /api/oauth/kiro/api-key builds an upstream URL using a user-controlled region value, allowing an authenticated attacker to supply a crafted region such as kiro-ca…
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Medium 6.5
Credential disclosure in Strands Agents Tools elasticsearch_memory tool
Strands Agents is an open-source Python SDK for building and running AI agents. The strands-agents-tools package provides pre-built tools for use with the SDK, including the elasticsearch_memory tool for agent memory storage. We identified CVE-2026-15746, a s…
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Medium 6.4
Koel has SSRF through Authenticated Subsonic podcast feed URLs
## Summary Koel's Subsonic `createPodcastChannel.view` endpoint accepts a user supplied podcast feed URL and fetches it server-side before applying the safe URL checks that are used for podcast episode enclosure URLs. An authenticated Subsonic API user can pr…
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Medium 5.8
Vaultwarden: Server-side request forgery (SSRF) via Icon Endpoint Decimal/Hex/Octal IP Bypass
Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.36.0, Vaultwarden's /icons/{domain}/icon.png endpoint used src/http_client.rs checks including should_block_address() and post_resolve() that missed decimal, hexadecimal, and octal IP re…
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Medium 6.5
Cloudreve: Non-admin remote download users can SSRF loopback/internal services and read imported responses
Cloudreve is a self-hosted file management and sharing system. Prior to 4.16.1, Cloudreve's remote download workflow accepts user-supplied URLs at POST /api/v4/workflow/download and passes them to the configured downloader without blocking loopback, localhost…
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Medium 6.3
FastGPT: Shared axios SSRF guard validates only the initial URL before following redirects
FastGPT is a knowledge-based AI application platform. Prior to 4.15.0-beta5, FastGPT's shared SSRF guard validates only the initial request URL before handing the request to axios, and axios follows redirects by default. An authenticated workflow user can con…
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Medium 6.3
mastergo-design mastergo-magic-mcp mcp__getComponentLink get-component-link.ts z.string server-side request forgery
A weakness has been identified in mastergo-design mastergo-magic-mcp up to 0.2.0. Impacted is the function z.string of the file src/tools/get-component-link.ts of the component mcp__getComponentLink. Executing a manipulation of the argument url can lead to se…
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Medium 6.8
NVIDIA TensorRT-LLM for Linux contains a vulnerability in the multimodal media fetching functions, where a network-acce…
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Medium 6.9
Symfony: IpUtils::PRIVATE_SUBNETS Omits IPv6 Transition Forms (6to4, NAT64, Teredo, IPv4-compatible): SSRF Bypass in NoPrivateNetworkHttpClient
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 5.4.0 to 5.4.53, 6.4.41, 7.4.13, and 8.0.13, NoPrivateNetworkHttpClient and IpUtils::PRIVATE_SUBNETS omitted IPv6 transition prefixes such as 6to4, NAT64, T…
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Medium 6.5
Microsoft SharePoint Server Information Disclosure Vulnerability
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
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Medium 4.9
Nexus Repository 3 - Server-Side Request Forgery (SSRF) via HTTP Redirect
Nexus Repository 3 did not apply its existing Server-Side Request Forgery (SSRF) protections to HTTP redirect targets returned by proxy repository upstream servers. Any user with read access to a proxy repository backed by an attacker-controlled or compromise…
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Medium 5.1
Nexus Repository 3 - Server-Side Request Forgery (SSRF) via Webhook: Global Capability
Nexus Repository 3 does not validate the destination of the "Webhook: Global" capability's configured URL before making an outbound HTTP request, allowing a user holding the Capability Administration permission to cause the server to send requests to internal…
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Medium 5.3
Nexus Repository - SSRF in SSL Certificate Retrieval
Nexus Repository 3 is vulnerable to Server-Side Request Forgery (SSRF) via the SSL Certificate Retrieval endpoint. A user holding the nexus:ssl-truststore:read permission could cause the server to initiate outbound connections to internal or otherwise restric…
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Medium 6.5
Sustainable Irrigation Platform 5.2.16 SSRF via Node-RED Callback URL
Sustainable Irrigation Platform (SIP) through version 5.2.16 contains a server-side request forgery (SSRF) vulnerability that allows unauthenticated attackers to make the device issue arbitrary HTTP requests by supplying a malicious callback URL when the opti…
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Medium 6.3
louisho5 picobot web Tool web.go WebTool.Execute server-side request forgery
A vulnerability has been found in louisho5 picobot up to 0.2.0. This vulnerability affects the function WebTool.Execute of the file internal/agent/tools/web.go of the component web Tool. The manipulation of the argument url leads to server-side request forger…
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Medium 6.3
zhayujie chatgpt-on-wechat CowAgent Vision Tool vision.py Vision._download_to_data_url server-side request forgery
A security flaw has been discovered in zhayujie chatgpt-on-wechat CowAgent up to 2.1.1. This issue affects the function Vision._download_to_data_url of the file agent/tools/vision/vision.py of the component Vision Tool. Performing a manipulation of the argume…
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Medium 6.3
nextlevelbuilder GoClaw invoke Endpoint create_video_byteplus.go bytePlusDownloadVideo server-side request forgery
A vulnerability has been found in nextlevelbuilder GoClaw 3.13.3-beta.3. Affected by this vulnerability is the function bytePlusDownloadVideo of the file internal/tools/create_video_byteplus.go of the component invoke Endpoint. The manipulation of the argumen…
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Medium 6.3
mosaxiv clawlet tool_web_fetch.go tools.webFetch server-side request forgery
A security vulnerability has been detected in mosaxiv clawlet up to 0.2.10. This affects the function tools.webFetch of the file tools/tool_web_fetch.go. Such manipulation leads to server-side request forgery. The attack can be launched remotely. The exploit …
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Medium 6.3
mosaxiv clawlet IPv4 tool_web_fetch.go web_fetch server-side request forgery
A weakness has been identified in mosaxiv clawlet up to 0.2.10. The impacted element is the function web_fetch of the file tools/tool_web_fetch.go of the component IPv4 Handler. This manipulation of the argument url causes server-side request forgery. The att…
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Medium 6.5
Apache Gravitino: Authenticated SSRF in Gravitino JobManager allows server-side HTTP requests to internal network and cloud metadata endpoints via unvalidated job template URIs
Authenticated SSRF in Gravitino JobManager allows server-side HTTP requests to internal network and cloud metadata endpoints via unvalidated job template URIs. A vulnerability in Apache Gravitino. This issue affects Apache Gravitino: from 1.0.0 through 1.2.1.…
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Medium 4.9
WordPress Auto Featured Image (Auto Post Thumbnail) plugin <= 5.0.4 - Server Side Request Forgery (SSRF) vulnerability
Server-Side Request Forgery (SSRF) vulnerability in Themeisle Auto Featured Image (Auto Post Thumbnail) auto-post-thumbnail allows Server Side Request Forgery.This issue affects Auto Featured Image (Auto Post Thumbnail): from n/a through <= 5.0.4.
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Medium 6.4
WordPress Instant Image Generator plugin <= 2.1.4 - Server Side Request Forgery (SSRF) vulnerability
Server-Side Request Forgery (SSRF) vulnerability in bdthemes Instant Image Generator ai-image allows Server Side Request Forgery.This issue affects Instant Image Generator: from n/a through <= 2.1.4.
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Medium 6.3
kLOsk adloop write.py _validate_urls server-side request forgery
A vulnerability was detected in kLOsk adloop up to 0.9.0. This vulnerability affects the function _validate_urls of the file src/adloop/ads/write.py. Performing a manipulation of the argument final_url results in server-side request forgery. The attack may be…
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Medium 6.3
Helicone ai-gateway AWS Metadata Service service.rs build_target_url server-side request forgery
A flaw has been found in Helicone ai-gateway up to 0.2.0-beta.30. This affects the function build_target_url of the file ai-gateway/src/dispatcher/service.rs of the component AWS Metadata Service. Executing a manipulation of the argument extracted_path_and_qu…
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Medium 6.3
AstrBotDevs AstrBot MCP Test Endpoint tools.py ToolsRoute.test_mcp_connection server-side request forgery
A security vulnerability has been detected in AstrBotDevs AstrBot up to 4.25.2. Affected by this issue is the function ToolsRoute.test_mcp_connection of the file astrbot/dashboard/routes/tools.py of the component MCP Test Endpoint. The manipulation of the arg…
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Medium 6.3
AstrBotDevs AstrBot market_list Endpoint plugin.py get_online_plugins server-side request forgery
A weakness has been identified in AstrBotDevs AstrBot up to 4.25.2. Affected by this vulnerability is the function get_online_plugins of the file astrbot/dashboard/routes/plugin.py of the component market_list Endpoint. Executing a manipulation of the argumen…
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Medium 5.8
Mailpit: Incomplete SSRF protection in Link Check API via IPv6 transition mechanisms (follow-up to CVE-2026-27808)
Mailpit is an email testing tool and API for developers. Prior to 1.30.2, the remediation shipped for CVE-2026-27808 is incomplete because the tools.IsInternalIP deny-list in internal/tools/net.go relies on Go's standard library classification helpers and doe…
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Medium 6.9
Misskey: SSRF bypass in URL Preview
Misskey is an open source, federated social media platform. Prior to 2026.6.0, Misskey contains a Server-Side Request Forgery (SSRF) vulnerability in URL preview functionality in UrlPreviewService. Due to missing network restrictions before establishing outbo…
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Medium 6.5
RabbitMQ: UNC SSRF affecting the management UI on Windows
RabbitMQ is a messaging and streaming broker. Prior to 4.1.11 and 4.2.6 on Windows, the RabbitMQ management plugin static file handler rabbit_mgmt_wm_static can pass URL-encoded backslashes to erl_prim_loader:read_file_info before path validation when multipl…