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
1,405 results · Clear filters · Feed
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High 7.1
AzuraCast before 0.23.8 Server-Side Request Forgery via Remote Relay URL
AzuraCast (Composer package azuracast/azuracast) before 0.23.8 validates a station's "Remote Relay" URL only for URL syntax and an http/https scheme (Utilities\Urls::parseUserUrl, used by StationRemote::getUrlAsUri) and performs no host or IP address restrict…
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High 7.6
Kyverno before 1.19.1 SSRF via legacy apiCall service executor
Kyverno before 1.19.1 is vulnerable to server-side request forgery. The default egress blocklist (169.254.169.254, 169.254.169.253, metadata.google.internal, 127.0.0.0/8, ::1/128) and the scoped-token control were wired only into the new CEL http.Get/Post lib…
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High 8.6
Adminer 6.0.0 Server-Side Request Forgery via ClickHouse driver
Adminer 6.0.0 through 6.0.1, when the official ClickHouse driver plugin (plugins/drivers/clickhouse.php, rewritten in 6.0.0) is loaded, is vulnerable to pre-authentication server-side request forgery. An unauthenticated attacker can submit auth[driver]=clickh…
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High 8.2
OpenClaw before 2026.8.1 DNS Rebinding via CDP Hostname
OpenClaw is an agent gateway distributed as the npm package 'openclaw'. In versions >= 2026.4.5 and < 2026.8.1, the Gateway validated a single DNS resolution result for a configured remote Chrome DevTools Protocol (CDP) hostname, but the raw WebSocket and Pla…
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High 7.1
OpenClaw before 2026.8.1 DNS Rebinding via attachment delivery
OpenClaw is an npm-distributed gateway application. In versions >= 2026.7.1 and < 2026.8.1, Synology Chat attachment delivery could lose DNS pinning: the Gateway validated a single DNS result for a supplied file URL but then passed the original hostname to th…
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High 8.2
MediaFlow Proxy through 2.4.9 Server-Side Request Forgery via Incomplete Validation
MediaFlow Proxy through 2.4.9 contains a server-side request forgery vulnerability in the /proxy routes due to missing and incomplete destination validation in the d query parameter. Remote attackers can supply arbitrary internal URLs including loopback and c…
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High 8.1
An issue in the VMware datastore driver of OpenStack glance_store. When an authenticated attacker provides a maliciousl…
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High 7.3
songxinjianqwe Chat chat-server ChatServer.java server-side request forgery
A weakness has been identified in songxinjianqwe Chat up to ac63d25297079eed5e4ba7e88d3b7a032637150d. Affected by this issue is some unknown functionality of the file chat-server/src/main/java/cn/sinjinsong/chat/server/ChatServer.java of the component chat-se…
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High 8.1
TREK: Server-Side Request Forgery via User-Configurable LLM Base URL
TREK is a collaborative travel planner. Prior to 3.3.0, TREK allows an authenticated user to store an attacker-controlled llm_base_url through the settings API when the LLM_PARSING feature is enabled. Write permission to the target trip instance is required t…
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High 7.7
Termix: Authenticated SSRF via `/homepage/proxy` — No Destination Allowlist
Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. From 2.5.0 until 2.5.1, the /homepage/proxy endpoint accepts an authenticated user's url query parameter and passes it to http.get or https.get witho…
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High 8.6
BentoPDF: SSRF in cors-proxy-worker.js via DNS-based hostname allowlist bypass
BentoPDF is a client-side PDF toolkit that is self hostable. In 2.8.6 and earlier, the certificate and timestamp CORS proxy in cloudflare/cors-proxy-worker.js uses isPrivateOrReservedHost() to validate a supplied hostname separately from the DNS resolution us…
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High 8.5
Logto: SSRF via Webhooks and Custom OAuth2 Connector UserInfo Endpoint
Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.43.0, Logto fetches administrator-controlled outbound destinations without validating the address used for the connection. Webhook delivery in packages/core/src/libraries/ho…
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High 8.8
An issue in geelen mcp-remote 0.1.16 through 0.1.38 allows a remote attacker to execute arbitrary code via the open() f…
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High 8.5
Formie: Integration form-settings action allows SSRF and exfiltration of stored integration credentials
Formie is a Craft CMS plugin for creating forms. Prior to 2.2.23 and 3.1.31, Formie's formie/integrations/form-settings control panel action in IntegrationsController::actionFormSettings is reachable without the required form integration permissions and passe…
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High 7.9
IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities
IBM Financial Transaction Manager (FTM) for RedHat OpenShift could allow a local attacker to obtain sensitive information and trigger unauthorized actions due to server-side request forgery.
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High 7.1
Premiere Pro | Server-Side Request Forgery (SSRF) (CWE-918)
Premiere Pro is affected by a Server-Side Request Forgery (SSRF) vulnerability that could result in privilege escalation potentially resulting in unauthorized write access. Exploitation of this issue does not require user interaction. Scope is changed.
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High 8.7
Adobe Experience Manager Forms JEE | Server-Side Request Forgery (SSRF) (CWE-918)
Adobe Experience Manager Forms JEE is affected by a Server-Side Request Forgery (SSRF) vulnerability that could result in privilege escalation. An attacker with high privileges could exploit this vulnerability to gain elevated access to internal resources. Ex…
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High 7.1
MCP Atlassian: SSRF redirect protection missing for basic-auth and OAuth authentication branches
MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, _make_ssrf_safe_hook is omitted from JiraFetcher and ConfluenceFetcher sessions created through the basic-auth and oauth_pat branches. If an …
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High 7.5
MCP Atlassian: Incomplete fix for CVE-2026-27826: DNS rebinding bypasses SSRF validation (validated IP not pinned)
MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, validate_url_for_ssrf checks a hostname's resolved addresses, but Requests and urllib3 resolve the hostname again when connecting. A caller c…
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High 8.3
mcp-atlassian has an incomplete SSRF remediation
MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, the X-Atlassian-Jira-Url and X-Atlassian-Confluence-Url headers are processed by _process_authentication_headers and used to construct Atlass…
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High 8.8
MCP Atlassian: SSRF Protection Bypass
MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, validate_url_for_ssrf has a backslash authority confusion because it interprets the authority differently from the Requests connection layer …
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High 7.3
dgtlmoon changedetection.io Preview Endpoint __init__.py add_watch_ui_snapshot server-side request forgery
A vulnerability was found in dgtlmoon changedetection.io up to 50389b07. This vulnerability affects the function add_watch_ui_snapshot of the file changedetectionio/blueprint/add_watch_ui/__init__.py of the component Preview Endpoint. Performing a manipulatio…
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High 7.1
LightRAG: SSRF via IPv6-transition address bypass (NAT64, IPv4-compatible, 6to4) of the native-markdown image-download guard
LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, _validated_addresses in lightrag/parser/markdown/parser.py evaluates the literal resolved address with ipaddress.is_global without consistently classifying an IPv4 address embed…
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High 7.5
Lantronix Autonomous Out-of-Band Devices WebTelnet SSRF via rooturl Parameter
Lantronix SLC8000 before firmware v9.7.0.3, SLC9000 before firmware v9.7.0.2, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882 contain a server-side request forgery vulnerability in the WebSSH/WebTelnet listener that allows unauth…
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High 8.6
Lantronix Autonomous Out-of-Band Devices WebSSH SSRF via rooturl Parameter
Lantronix SLC8000 before firmware v9.7.0.3, SLC9000 before firmware v9.7.0.2, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882 contain a server-side request forgery vulnerability in the WebSSH/WebTelnet listener that allows unauth…
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High 8.6
Lantronix Autonomous Out-of-Band Devices WebSSH SSRF via Username Truncation
Lantronix SLC8000 before firmware v9.7.0.3, SLC9000 before firmware v9.7.0.2, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882 contain a server-side request forgery vulnerability in the WebSSH/WebTelnet listener that allows unauth…
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High 7.7
draw.io: Unauthenticated SSRF via IPv6 ULA blocklist bypass in /embed2.js
draw.io is a configurable diagramming and whiteboarding application. Prior to version 30.3.8, src/main/java/com/mxgraph/online/Utils.java checks IPv6 Unique Local Addresses in Utils.sanitizeUrl() by comparing the text prefixes fc00:: and fd00::, but the JDK r…
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High 8.3
MISP Arbitrary Local File Read and SSRF via MISP Export Upload
MISP has a file-handling vulnerability that could let certain authenticated users make the server read files or access internal network services. When importing an XML file, MISP did not properly verify that the uploaded content was actually XML. Because of t…
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High 7.3
vas3k TaxHacker Invoice PDF Renderer actions.ts generateInvoicePDF server-side request forgery
A vulnerability was detected in vas3k TaxHacker up to 0.8.5. Affected is the function generateInvoicePDF of the file /apps/invoices/actions.ts of the component Invoice PDF Renderer. Performing a manipulation of the argument businessLogo results in server-side…
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High 7.3
NonceGeek dim-sum-app Deno Backend main.tsx textSearchV2Handler server-side request forgery
A security vulnerability has been detected in NonceGeek dim-sum-app. This impacts the function textSearchV2Handler of the file deno/main.tsx of the component Deno Backend. Such manipulation of the argument supabase_url leads to server-side request forgery. Th…
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High 7.5
LMDeploy has an SSRF bypass
### Summary The URL checking logic in lmdeploy has a logical flaw that could be bypassed by attackers, leading to SSRF attacks. ### Details The current lmdeploy project uses `_is_safe_url` to validate the input URL. The main logic is to perform security check…
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High 7.7
ArcadeDB before 26.9.1 SSRF via IPv6 transition addresses
ArcadeDB versions before 26.9.1 fail to validate IPv6 transition addresses in the SSRF guard used by IMPORT DATABASE and server commands. Authenticated attackers can supply URLs resolving to NAT64, 6to4, or Teredo addresses embedding RFC 1918 or loopback IPv4…
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High 7.5
Azure AI Foundry Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.
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High 8.4
Vvveb oEmbedProxy vulnerable to server-side request forgery
Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.5, the oEmbedProxy() handler in admin/controller/editor/editor.php accepts an attacker-controlled url parameter and passes it to getUrl(), w…
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High 7.7
Glean: Server-Side Request Forgery (SSRF) with Full Response Disclosure via Malicious RSS Feed in /api/feeds/discover
Glean is a self-hosted RSS reader and personal knowledge management tool. Prior to 0.2.6, POST /api/feeds/discover passes an attacker-supplied feed_url to discover_feed(feed_url), creates a subscription through FeedService.create_subscription(), and enqueues …
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High 7.4
Dell OpenManage Server Administrator, versions prior to 11.1.0.3, contains a Server-Side Request Forgery (SSRF) vulnera…
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High 8.6
HKUDS nanobot before 0.3.0 Server-Side Request Forgery via WebFetchTool
HKUDS nanobot before 0.3.0 contains a server-side request forgery vulnerability in the WebFetchTool component where the _validate_url() function fails to block internal IP ranges and private addresses. Attackers can send messages instructing the bot to fetch …
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High 7.5
changedetection.io through 0.60.6 SSRF via browser-step Goto URL
changedetection.io through 0.60.6 fails to validate the Goto URL action in browser steps, allowing unauthenticated attackers to access internal addresses. Attackers can supply arbitrary internal URLs in the optional_value parameter to retrieve responses from …
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High 7.1
Nango through 0.70.4 Server-Side Request Forgery via Configuration
Nango through 0.70.4 fails to validate caller-supplied connection configuration values interpolated into provider token and proxy URL templates. Authenticated attackers can supply malicious configuration values to direct server requests at internal addresses …
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High 7.5
Quickwit through 0.9.0 SSRF via SQS queue_url Parameter
Quickwit through 0.9.0 fails to validate the host and scheme of the queue_url parameter in SQS file sources, allowing attackers to make the node issue requests to arbitrary internal addresses. Attackers can supply a malicious queue_url to the create-source AP…