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
3,814 results · Feed
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Medium 4.3
Plex Media Server arbitrary-host SSRF
Plex Media Server before 1.43.3.10861 allows an authenticated user to request arbitrary internal or external addresses via the '/video/:/transcode/universal' path parameter.
KEV Oct 20, 2026 -
Medium 4.3
Plex Media Server SSRF
Plex Media Server before 1.43.3.10861 allows SSRF via '/player/timeline'. An attacker using any X-Plex-Token value can include a full URL in the 'protocol' parameter and force the Plex server to POST to the attacker's chosen destination.
KEV Oct 20, 2026 -
Medium 6.5
SSRF Leading to JWT Token Disclosure in Global IT Informatics' Weoll
Server-Side request forgery (SSRF) vulnerability in Global IT Informatics Technology Services Inc. Weoll allows Server Side Request Forgery. This issue affects Weoll: before 3.2.45.44.
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Medium 5.0
Directorist < 8.9.5 - Subscriber+ SSRF via Avatar URL
The Directorist: AI-Powered Business Directory, Listings & Classified Ads WordPress plugin before 8.9.5 does not validate a user-supplied URL before fetching it server-side, allowing users with the subscriber role and above to make the server issue requests t…
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Medium 6.3
iFlytek astron-agent debugToolV2 API endpoint UrlCheckTool.checkUrl server-side request forgery
A security vulnerability has been detected in iFlytek astron-agent up to 1.0.6. Affected by this vulnerability is the function UrlCheckTool.checkUrl of the component debugToolV2 API endpoint. The manipulation of the argument endPoint leads to server-side requ…
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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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Medium 6.5
Multiple Vulnerabilities in IBM Concert Software
IBM Concert 1.0.0 through 3.0.0 is vulnerable to server-side request forgery (SSRF). This may allow an authenticated attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks.
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Critical 9.3
GitHub Enterprise Server notebook viewer vulnerable to Server-side request forgery
A server-side request forgery (SSRF) vulnerability was identified in the notebook viewer of GitHub Enterprise Server. The notebook viewer validated the scheme and host of a user-supplied URL but did not validate the port, allowing requests to be directed to i…
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Medium 5.5
Mattermost server-side request forgery via OAuth endpoints configurable by a System Administrator
Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10, 11.10.x <= 11.10.1 fail to apply the internal-connection filter to OAuth endpoint requests, which allows a System Administrator to make the server issue requests to internal network ad…
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Medium 5.4
Home Assistant: mDNS Server-Side Request Forgery
Home Assistant is open source home automation software focused on local control and privacy. Prior to 2026.2.3, the IPP integration automatically processed unauthenticated _ipp._tcp.local mDNS announcements in homeassistant/components/ipp/config_flow.py, wher…
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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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Critical 9.6
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. A low-privileged attacker could exploit this vulnerability to gain elevated access to internal resources. Exploitat…
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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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Medium 5.3
MCP Atlassian: Incomplete fix for CVE-2026-27826: redirect-based SSRF via unhooked requests session in Jira user-permission lookup
MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, JiraUserMixin._lookup_user_by_permissions uses the module-level requests.get function instead of the fetcher's protected session. A caller-co…
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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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Medium 5.9
MCP Atlassian: SSRF via DNS Rebinding in Header-Based Authentication Flow
MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, header-supplied Jira or Confluence URLs are resolved and validated before the HTTP client resolves the hostname again for the connection. An …
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Critical 9.9
Adobe Campaign Classic (ACC) | Server-Side Request Forgery (SSRF) (CWE-918)
Adobe Campaign Classic (ACC) is affected by a Server-Side Request Forgery (SSRF) vulnerability that could result in privilege escalation. Exploitation of this issue does not require user interaction. Scope is changed.
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Critical 9.9
Adobe Campaign Classic (ACC) | Server-Side Request Forgery (SSRF) (CWE-918)
Adobe Campaign Classic (ACC) is affected by a Server-Side Request Forgery (SSRF) vulnerability that could result in privilege escalation. A low-privileged attacker could exploit this vulnerability to gain elevated access to internal resources. Exploitation of…
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Critical 9.6
Adobe Campaign Classic (ACC) | Server-Side Request Forgery (SSRF) (CWE-918)
Adobe Campaign Classic (ACC) is affected by a Server-Side Request Forgery (SSRF) vulnerability that could result in privilege escalation. A low-privileged attacker could exploit this vulnerability to gain elevated access to internal resources. Exploitation of…
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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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Medium 6.3
FastGPT safe axios SSRF guard still allows DNS rebinding TOCTOU on protected outbound requests
FastGPT is an open-source LLM platform for building AI applications on a knowledge base. Prior to 4.15.2, the safe Axios request interceptor in packages/service/common/api/axios.ts validates a hostname with isInternalAddress() before a later HTTP connection p…
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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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Medium 5.3
Novu: Server-Side Request Forgery (SSRF) via Chat Provider Webhook URLs
Novu provides an API for sending notifications through multiple channels. Prior to 3.18.0, Novu accepts chat webhook URLs from subscriber credentials.webhookUrl, channel endpoint endpoint.url, event payload.webhookUrl, and event overrides.webhookUrl, then pas…
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Medium 6.5
Cloudreve: SSRF guard bypass: checkIP does not decode IPv6-transition wrappers (NAT64, IPv4-compatible, 6to4) reaching internal and cloud-metadata addresses
Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, the ValidateExternalURL server-side request forgery guard in pkg/request/ssrf.go passes resolved addresses to checkIP without decoding NAT64, IPv4-compatible, and 6to4 IPv4-in-IPv…
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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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Medium 6.9
MISP Unauthenticated Blind SSRF via XML Body Processing
MISP's RequestHandlerComponent automatically decodes XML request bodies on all write requests. The underlying Xml::build() library contains a logic error in its readFile guard condition (readFile && http || https), where PHP operator precedence causes the htt…
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Medium 5.6
Tauri framework v2 SSRF Protection Bypass via HTTP Redirects
The Tauri HTTP plugin validates requested URLs against the application's configured scope allowlist only once, on the initial request. When the remote server responds with an HTTP 3xx redirect, reqwest follows the redirect internally without re-checking the n…
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Medium 4.3
MaxKB: Authenticated full-read SSRF via the knowledge web-document import/sync crawler (Fork.fork requests.get, no internal-IP guard, non-blind)
MaxKB is an open-source AI assistant for enterprise. In version 2.10.3-lts and earlier, the knowledge web-document import and synchronization crawler passes an authenticated workspace user's URL to Fork.fork, which calls requests.get with verify=False and wit…
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Medium 6.5
InvenTree: Administrative staff users can trigger Arbitrary File Read leading to Credential Disclosure
InvenTree is an Open Source Inventory Management System. Prior to 1.4.0, privileged staff users who can author report or label templates can cause WeasyPrint report rendering to retrieve attacker-selected resources through the HTTP and HTTPS URL schemes or th…
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Medium 6.0
HomeBox: Notifier SSRF guard misses NAT64 prefixes (64:ff9b::/96, 64:ff9b:1::/48) — generic:// URL reaches cloud metadata on NAT64 egress
HomeBox is a home inventory and organization system. Prior to 0.26.0, the default-on BlockBogonNets and BlockCloudMetadata notifier SSRF protections in backend/internal/sys/validate/notifier_url.go do not inspect IPv4 destinations embedded in the NAT64 prefix…
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Medium 5.7
@aborruso/ckan-mcp-server has SSRF via DNS-name → internal IP — incomplete fix of CVE-2026-53509
CKAN MCP Server is a tool for querying CKAN open data portals. Prior to version 0.4.108, the SSRF guard `validateServerUrl` (added for CVE-2026-33060, extended for CVE-2026-53509) validates only the hostname string and never resolves DNS. Any caller-supplied …
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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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Medium 6.8
draw.io: SSRF via DNS rebinding in ProxyServlet bypasses private IP blocklist
draw.io is a configurable diagramming and whiteboarding application. Prior to version 30.2.7, deployments with ENABLE_DRAWIO_PROXY=1 are vulnerable to server-side request forgery because src/main/java/com/mxgraph/online/Utils.java performs the private-address…
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Medium 4.1
Hatchet: SSRF via Unsigned UnsubscribeURL in SNS UnsubscribeConfirmation Handler
Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. Prior to 0.91.1, the SNS UnsubscribeConfirmation handler in internal/integrations/ingestors/sns/sns.go calls http.Get() on payload.UnsubscribeURL after Verify…
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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…