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
3,802 results · Feed
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Low 2.3
Lychee: Distinct post-fix SSRF variant in Photo::fromUrl due to missing IP pinning after DNS-based validation
Lychee is a free, open-source photo-management tool. Prior to 7.6.0, the POST /api/v2/Photo::fromUrl flow validates a hostname and its resolved addresses in app/Rules/PhotoUrlRule.php but later passes the original hostname through app/Actions/Import/FromUrl.p…
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High 8.8
Jetty proxy blacklist performs case-sensitive matching of case-insensitive DNS hostnames
In Eclipse Jetty, across various versions of `jetty-server`, and `jetty-proxy`, the host whitelist/blacklist is case-sensitive, and would allow hosts through that only differ by case.
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Medium 5.3
SSRF in QNAP Download Station
A server-side request forgery (SSRF) vulnerability has been reported to affect Download Station. If a remote attacker gains a user account, they can then exploit the vulnerability to read application data. We have already fixed the vulnerability in the follow…
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High 7.3
PhastPress <= 3.10 - Unauthenticated Server-Side Request Forgery via 'src' Parameter
The PhastPress plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 3.10 This is due to the scripts service endpoint constructing its URL whitelist dynamically from the attacker-controlled HTTP 'Host' header.…
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Medium 5.0CVE-2026-78850 Public exploit
An issue in Matomo v.5.11.2 allows a remote attacker to obtain sensitive information via the SiteContentDetector / Site…
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High 8.5
Renovate before 44.79.0 SSRF via HTTP Preset URLs and customDatasources
Renovate before 44.79.0 contains a server-side request forgery vulnerability that allows users to make the shared HTTP client request arbitrary internal URLs via extends presets or customDatasources. Attackers can point a preset at an instance metadata servic…
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Low 1.1
Checkov by Prisma Cloud: Server-Side Request Forgery Vulnerability
A server-side request forgery vulnerability in Palo Alto Networks Checkov by Prisma® Cloud enables a local unauthenticated user to make unauthorized network requests from host to internal services.
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Medium 6.8
InvoiceShelf: SSRF via unvalidated Gotenberg PDF renderer host in PDF configuration
InvoiceShelf is an open-source web & mobile app that helps track expenses, payments and create professional invoices and estimates. Prior to version 2.4.0, InvoiceShelf's PDFConfigurationRequest.php validates the owner-controlled gotenberg_host setting only a…
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Medium 6.8
BentoPDF: SSRF via DNS Rebinding (TOCTOU) in Cloudflare CORS Proxy Worker
BentoPDF is a privacy-focused PDF toolkit that runs in the browser. In versions through 2.8.6, cloudflare/cors-proxy-worker.js performs a DNS-over-HTTPS safety check in hostnameResolvesToPrivate(), as used by isValidCertificateUrl() and isValidTsaUrl(), separ…
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High 7.1
Flyto2 Core: SSRF guard bypass via IPv6 transition addresses (IPv4-mapped / 6to4 / NAT64) in validate_url_ssrf
Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.3, validate_url_ssrf and is_private_ip in src/core/utils.py compare resolved addresses only against native private IPv4 and IPv6 ranges and do not unwrap IPv4-mapped, IPv4…
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Medium 4.9
Redash: JSON data source query URL can bypass base URL restriction
Redash is a package for data visualization and sharing. From 10.0.0 until 26.9.0, the JSON data source query runner in redash/query_runner/json_ds.py used _get_all_results() to combine its configured base_url with a user-supplied query URL by using urljoin. A…
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Critical 9.9
KEDA: Privilege escalation from namespace admin to cluster admin via KEDA TriggerAuthentication
KEDA is a Kubernetes-based Event Driven Autoscaling component. In version 2.20.2 and earlier, a namespace administrator who can create TriggerAuthentication and ScaledObject resources can set hashiCorpVault.address to a tenant-controlled endpoint and select K…
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High 7.2
Portkey AI Gateway 1.14.0 through 1.15.2 SSRF via x-portkey-custom-host Header
Portkey AI Gateway 1.14.0 through 1.15.2 contains a server-side request forgery vulnerability that allows unauthenticated attackers to reach loopback and Docker host services because isValidCustomHost trusts localhost-style hosts when TRUSTED_CUSTOM_HOSTS is …
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Medium 5.9
TurboDocx html-to-docx through 1.23.1 SSRF via img src Remote Image Download
TurboDocx html-to-docx through 1.23.1 contains a server-side request forgery vulnerability that allows attackers supplying HTML to make the server fetch internal URLs via img src attributes. Attackers can reference loopback, private, or cloud metadata address…
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Medium 5.3
Gitea blind SSRF through OpenID assertion verification
When OpenID sign-in is enabled, Gitea processes unauthenticated assertion parameters and sends an HTTP POST request to the caller-supplied OpenID provider endpoint during verification. An attacker controls the destination and much of the form body, allowing i…
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Medium 5.3
Gitea OpenID discovery server-side request forgery
When OpenID sign-in is enabled, Gitea accepts a user-supplied OpenID URL and performs discovery requests without validating the destination against internal network addresses. An unauthenticated remote attacker can cause the server to contact loopback or priv…
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High 8.6
Kan 0.5.5 through 0.6.0 Unauthenticated SSRF via /api/download/attatchment
Kan 0.5.5 through 0.6.0 contains an unauthenticated server-side request forgery vulnerability in the /api/download/attatchment route due to an incomplete fix for CVE-2026-32255. When S3_ENDPOINT is unset, attackers can pass arbitrary url query parameters to f…
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Medium 5.4
ruoyi-vue-pro through 2026.09 SSRF via Midjourney referImageUrl and notify imageUrl
ruoyi-vue-pro through 2026.09 contains a server-side request forgery vulnerability in the yudao-module-ai image service that allows authenticated users to make the server fetch arbitrary URLs by supplying referImageUrl to the midjourney imagine endpoint. Atta…
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Medium 4.0
ONLYOFFICE DocumentServer before 10.0.0 SSRF via downloadfile isInJwtToken Bypass
ONLYOFFICE DocumentServer before 10.0.0 contains an unauthenticated server-side request forgery vulnerability in the /downloadfile/:docid endpoint that allows remote attackers to bypass the private-IP request-filtering-agent by exploiting the isInJwtToken fla…
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Medium 4.1
FV Player 7.5.44.7212 - 7.5.54.7212 - Contributor+ SSRF via retrieve_video_data
The FV Flowplayer Video Player WordPress plugin before 7.5.55.7212 does not properly validate a user-supplied URL before performing a server-side fetch, and an existing host-based restriction fails to cover all cases, allowing users with Contributor-level acc…
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High 8.6
CAI Content Credentials | Server-Side Request Forgery (SSRF) (CWE-918)
CAI Content Credentials 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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High 8.6
ColdFusion | Server-Side Request Forgery (SSRF) (CWE-918)
ColdFusion 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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High 7.7
ColdFusion | Server-Side Request Forgery (SSRF) (CWE-918)
ColdFusion 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 this issue does n…
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Critical 10.0
ColdFusion | Server-Side Request Forgery (SSRF) (CWE-918)
ColdFusion 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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High 8.6
ColdFusion | Server-Side Request Forgery (SSRF) (CWE-918)
ColdFusion 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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High 7.1
ColdFusion | Server-Side Request Forgery (SSRF) (CWE-918)
ColdFusion 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. Exploit depends on conditions bey…
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High 7.6
ColdFusion | Server-Side Request Forgery (SSRF) (CWE-918)
ColdFusion 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. Exploitation of this issue…
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High 8.5
Dockhand before 1.0.43 SSRF via /api/templates/compose Endpoint
Finsys Dockhand before 1.0.43 contains a response-disclosing server-side request forgery vulnerability that allows authenticated users to make the server fetch arbitrary URLs by supplying repository URL and stackfile values. Attackers can send stack templates…
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Medium 4.3
Dockhand before 1.0.45 SSRF via IPv6 Transition Address Bypass in ipCategory
Finsys Dockhand before 1.0.45 contains a server-side request forgery vulnerability in the ipCategory() function in src/lib/server/url-safety.ts, which fails to check NAT64, 6to4, and Teredo IPv6 transition ranges. Authenticated attackers can embed loopback, c…
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High 7.5
Microsoft Office SharePoint Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
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High 7.5
Microsoft Office SharePoint Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
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Medium 6.5
Azure Arc Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Azure Arc allows an authorized attacker to elevate privileges over a network.
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High 7.5
Microsoft Office SharePoint Elevation of Privilege Vulnerability
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
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Medium 6.5
Microsoft Office SharePoint 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 5.7
Microsoft Office SharePoint Spoofing Vulnerability
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over an adjacent network.
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Medium 4.8
Lancet through 2.3.9 SSRF Protection Bypass via netutil.IsInternalIP
Lancet through 2.3.9 contains an SSRF protection bypass vulnerability in netutil.IsInternalIP that misclassifies IPv6 private, link-local, CGNAT and transition addresses as external. Attackers can supply hostnames resolving to these address forms, including N…
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Low 2.7
Shaarli through 0.16.9 SSRF via Thumbnail Retrieval update-thumbnail Route
Shaarli through 0.16.9 contains a server-side request forgery vulnerability that allows authenticated users to make the server request internal addresses by fetching bookmark thumbnails without private-address checks. Attackers can create bookmarks pointing t…
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Low 3.1
Kavita 0.9.0 through 0.9.1.4 SSRF Blocklist Bypass via upload-cbl-file Endpoint
Kavita 0.9.0 through 0.9.1.4 contains a server-side request forgery vulnerability that allows authenticated users to bypass the SSRF blocklist through DNS rebinding or HTTPS redirects. Attackers can submit a URL to POST /api/Cbl/upload-cbl-file whose host reb…
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Medium 5.3
Razorpay IFSC Ruby gem through 2.0.62 SSRF via IFSC lookup
Razorpay IFSC Ruby gem through 2.0.62 contains a server-side request forgery vulnerability that allows attackers to redirect API requests by supplying a crafted IFSC code to IFSC.find or IFSC#get. Attackers can submit network-path references or absolute URIs …
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High 7.1
Kubeflow Model Registry through 0.3.17 SSRF via InferenceService Controller URL Annotation
Kubeflow Model Registry through 0.3.17 contains a server-side request forgery vulnerability that allows namespace users to steal the controller ServiceAccount token via the modelregistry.kubeflow.org/url annotation. Attackers can create an InferenceService po…