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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Medium 6.5
FlaskBB: SSRF in get_image_info() via unrestricted avatar URL
FlaskBB is a Forum Software written in Python using the micro framework Flask. Prior to version 2.2.1, a Server-Side Request Forgery (SSRF) vulnerability in get_image_info() allows any authenticated user to force the server to send HTTP requests to arbitrary …
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Medium 5.5
PraisonAI spider_tools SSRF protection bypass via alternate loopback host encodings
PraisonAI is a multi-agent teams system. Prior to version 4.6.40 of PraisonAI, corresponding to version 1.6.40 of praisonaiagents, `spider_tools` URL validation can be bypassed using alternate loopback host encodings. The tool contains a URL validation functi…
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Medium 6.8
Quay: mirror-registry: ssrf: repo-level mirror accepts external_reference without url validation
A flaw was found in Red Hat Quay's repository-level mirror configuration feature. The POST and PUT handlers in endpoints/api/mirror.py accept an external_reference parameter without SSRF validation, unlike the organization-level mirror handlers which apply va…
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Medium 6.4
AVideo Encoder downloadURL SSRF via unpinned retry fallback
AVideo versions from commit 0dbadbca through latest master contain a server-side request forgery vulnerability in the encoder download-by-URL flow due to an unpinned retry fallback that bypasses DNS pinning validation. An authenticated attacker can supply a d…
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Medium 5.3
Paymenter: Blind Unauthenticated SSRF on the Paypal gateway module
Paymenter is a free and open-source webshop solution for management of hosting services. In versions prior to 1.5.0, the PayPal webhook endpoint /extensions/paypal/webhook processes the PAYPAL-CERT-URL HTTP header without validation, allowing attackers to con…
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High 7.7
Huginn < 2026.09.09 SSRF via ScenarioImport fetch_url Method
Huginn before 2026.09.09 contains a server-side request forgery vulnerability in the fetch_url method of ScenarioImport that allows authenticated users to make arbitrary HTTP requests by submitting crafted URLs. Attackers can probe internal network services, …
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High 7.7
HyperDX < 2.31.0 SSRF via ClickHouse Proxy Test Endpoint
HyperDX before 2.31.0 contains a server-side request forgery vulnerability that allows authenticated team members to direct the server to arbitrary internal destinations by supplying a caller-controlled host parameter to the ClickHouse proxy test endpoint wit…
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Medium 5.0
HyperDX < 2.31.0 SSRF via Webhook Test Endpoint
HyperDX before 2.31.0 contains a server-side request forgery vulnerability that allows authenticated team members to direct the server to make requests to arbitrary internal network destinations by supplying a caller-controlled URL to the webhook test endpoin…
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High 7.7
LimeSurvey SSRF via REST API Survey Template Host Header
LimeSurvey through 6.17.10 and 7.0.4 contains a server-side request forgery vulnerability in the REST API survey template endpoint that allows authenticated users to cause the server to issue arbitrary HTTP requests by supplying a manipulated Host header. Att…
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Medium 5.1
Joomla Extension - themexpert.com - SSRF via remote download in JMedia Extension < 1.6.0
Joomla Extension - themexpert.com - SSRF via remote download in JMedia Extension < 1.6.0 - The Joomla extension JMedia is vulnerable to an SSRF vulnerability. Remote-URL download could target internal/reserved addresses.
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Medium 5.8
Mailpit has an incomplete fix for GHSA-6jxm: HTML check still permits SSRF to private/loopback/IMDS via missing IP-filter dialer
Mailpit is an email testing tool and API for developers. The fix for GHSA-6jxm-fv7w-rw5j (CVE-2026-23845, "Server-Side Request Forgery (SSRF) via HTML Check API"), shipped in mailpit `v1.28.3`, hardened `internal/htmlcheck/css.go::downloadCSSToBytes` with a 5…
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High 8.1
Apache Syncope: Low-privileged authenticated SSRF in Connectors and Resources check
Low-privileged authenticated Server-Side Request Forgery (SSRF) vulnerability in Apache Syncope via Connectors and Resources check. This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.6, from 4.1.0-M0 through 4.1.1. User…
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Medium 4.1
SurrealDB before 3.1.5 SSRF via JWKS URL Redirect
SurrealDB before 3.1.5 contains a server-side request forgery vulnerability in the JWKS fetcher that follows HTTP redirects without re-validating redirect targets against network capabilities. Attackers with Owner role can configure a JWKS URL pointing to an …
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Medium 6.4
SurrealDB before 3.1.0 Port-Specific Deny Rule Bypass via HTTP Redirect
SurrealDB before 3.1.0 contains a capability bypass vulnerability in HTTP redirect handling that allows authenticated users to circumvent port-scoped --deny-net rules. Attackers can chain an HTTP redirect from an allowed hostname to a denied host:port combina…
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Medium 4.1
SurrealDB before 3.2.0 SSRF via JWKS URL hostname resolution
SurrealDB before 3.2.0 contains a server-side request forgery vulnerability in the JWKS fetcher that validates only the URL hostname string against allow-lists without checking resolved IP addresses. An Owner role attacker can point an access method at an all…
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High 7.5CVE-2026-51031 Public exploit
FlareSolverr before version 3.4.7 contains a server-side request forgery (SSRF) vulnerability in the /v1 API endpoint. …
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Medium 6.3
1Panel-dev CordysCRM Third Party Edit Endpoint IntegrationConfigService.java getSqlBotSrc server-side request forgery
A vulnerability was determined in 1Panel-dev CordysCRM up to 1.4.1. Impacted is the function getSqlBotSrc of the file backend/crm/src/main/java/cn/cordys/crm/system/service/IntegrationConfigService.java of the component Third Party Edit Endpoint. Executing a …
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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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High 7.3
zevorn rt-claw http_request swarm.c receiver_thread server-side request forgery
A security flaw has been discovered in zevorn rt-claw up to 0.2.0. This impacts the function receiver_thread of the file claw/services/swarm/swarm.c of the component http_request. Performing a manipulation results in server-side request forgery. It is possibl…
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High 7.3
zevorn rt-claw http_request tool_net.c claw_net_post server-side request forgery
A vulnerability was identified in zevorn rt-claw up to 0.2.0. This affects the function claw_net_get/claw_net_post of the file claw/tools/tool_net.c of the component http_request. Such manipulation of the argument url leads to server-side request forgery. The…
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High 7.3
zevorn rt-claw http_request net.c claw_net_post server-side request forgery
A vulnerability was found in zevorn rt-claw up to 0.2.0. The affected element is the function claw_net_get/claw_net_post of the file claw/services/tools/net.c of the component http_request. The manipulation of the argument url results in server-side request f…
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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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High 7.3
Sipeed PicoClaw web.go web_fetch server-side request forgery
A weakness has been identified in Sipeed PicoClaw up to 0.2.9. This impacts the function web_fetch of the file pkg/tools/integration/web.go. This manipulation causes server-side request forgery. Remote exploitation of the attack is possible. The exploit has b…
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High 8.9
css_parser: SSRF and Local File Disclosure in `CssParser::Parser#read_remote_file`
css_parser is a Ruby CSS parser. From 2.2.0 until 3.0.0, CssParser::Parser#read_remote_file in lib/css_parser/parser.rb, and therefore load_uri! and the @import-following branch of add_block!, issued HTTP and HTTPS requests against any host, port, and URI wit…
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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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High 7.5
oras-go: credential forwarding via unvalidated Location header in blob upload
oras-go is a Go library for managing OCI artifacts. Prior to 2.6.1, registry/remote/repository.go in blobStore.completePushAfterInitialPost follows a registry-controlled Location header during monolithic blob upload and reuses the Authorization header from th…
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Low 2.1
oras-go: Malicious registry can hijack Bearer token realm to exfiltrate credentials and refresh tokens
oras-go is a Go library for managing OCI artifacts. Prior to 2.6.1, auth.Client follows the realm URL from a registry's WWW-Authenticate: Bearer challenge without validating the scheme or host, allowing a malicious or compromised registry to cause SSRF to int…
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High 7.7
SSRF Protection Configuration Vulnerability
IBM Langflow OSS 1.0.0 through 1.10.0 Langflow 1.9.0 could allow server-side request forgery (SSRF) due to insecure default configuration and incomplete enforcement of the SSRF protection mechanism.
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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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High 7.3
poco-ai poco-claw task.py run_task server-side request forgery
A vulnerability was identified in poco-ai poco-claw up to 0.5.4. This issue affects the function run_task of the file executor/app/api/v1/task.py. The manipulation of the argument callback_url leads to server-side request forgery. The attack is possible to be…
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High 8.1
Grav < 2.0.4 SSRF via Unrestricted cURL Protocols
Grav before 2.0.4 fails to restrict cURL protocols in webhook dispatch, allowing authenticated users with api.webhooks.write permission to create webhooks with file://, dict://, or gopher:// URLs. Attackers can trigger webhook events to read local files, acce…
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High 7.7
OpenClaw 2026.4.14 < 2026.5.26 SSRF via Browser Snapshot
OpenClaw 2026.4.14 before 2026.5.26 contain a server-side request forgery vulnerability in browser snapshot routes that fail to validate post-navigation destinations. Attackers with lower-trust access can bypass OpenClaw policy checks to reach network destina…
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High 8.5
OpenClaw 2026.3.28 < 2026.5.19 Authorization Bypass via Browser Act Route
OpenClaw 2026.3.28 before 2026.5.19 contain an authorization bypass vulnerability in the browser act route that fails to properly validate current-tab URL checks. Attackers with lower-trust access or configured input paths can perform actions requiring strong…
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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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High 7.7CVE-2026-62201 Public exploit
OpenClaw < 2026.6.6 Network Policy Bypass via exec-server
OpenClaw versions before 2026.6.6 contain a network policy bypass vulnerability in the sandbox exec-server that allows lower-trust callers to reach internal network destinations blocked by OpenClaw policy. Attackers can send HTTP requests through the exec-ser…
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High 7.5CVE-2026-51833 Public exploit
Xenforo 2.3.8 is vulnerable to SSRF. Attackers that have administrator privileges or are able to add/save RSS feeds can…