Weakness (CWE)
CWE-348: Use of Less Trusted Source
The product has two different sources of the same data or information, but it uses the source that has less support for verification, is less trusted, or is less resistant to attack.
Source: MITRE CWE-348
109 results · Feed
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Low 2.3
Symfony: Inline Fragments Let Untrusted Forwarded Headers Set the Host, Scheme and Port of the URLs Generated for the Main Request
Improper trust of forwarded headers in RouterListener::onKernelFinishRequest() in Symfony HttpKernel versions prior to 5.4.56, 6.x prior to 6.4.50, 7.x prior to 7.4.23, and 8.x prior to 8.1.11 allows a remote attacker to control the host, scheme, and port of …
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Medium 6.5
Remark42: Rate limit bypass via unconditional trust of X-Forwarded-For/X-Real-IP headers in direct-internet deployment
Remark42 is a self-hosted comment engine for blogs, articles, or any other place where readers can add comments. From 1.0.0 until 1.16.2, Remark42 globally trusts True-Client-IP, X-Real-IP, and X-Forwarded-For without verifying that the direct peer is a trust…
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Medium 5.3
ezBookkeeping: Source-IP allowlist (MCP & API token) is bypassable via a spoofed `X-Forwarded-For` header
ezBookkeeping is an open source, self-hosted personal finance application. From 0.10.0 until 1.6.0, ezBookkeeping constructs its Gin router with gin.New() without configuring SetTrustedProxies, causing c.ClientIP() to trust a spoofed X-Forwarded-For value. An…
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Unscored —
CGI versions before 5.00 for Perl trust the client X-Forwarded-Host header in url, self_url, virtual_host and virtual_port
CGI versions before 5.00 for Perl trust the client X-Forwarded-Host header in url, self_url, virtual_host and virtual_port. These take the host name and port from the X-Forwarded-Host request header when present, and otherwise from Host, without validating ei…
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Medium 5.3
PipesHub before 0.10.0 Rate Limit Bypass via Spoofed X-Forwarded-For Header
PipesHub before 0.10.0 contains a rate limit bypass vulnerability in getClientIp() that allows unauthenticated attackers to evade per-IP throttling by spoofing X-Forwarded-For or X-Real-IP headers. Attackers can rotate header values to obtain fresh rate-limit…
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Medium 5.3
Echo: X-Real-IP extractor trusts the header value instead of the sending peer
Echo is a Go web framework. From 5.0.0 until 5.4.1, Echo v5's ExtractIPFromRealIPHeader validates whether the client-supplied X-Real-IP value belongs to a trusted range instead of validating the direct network peer. A client reaching Echo directly, or through…
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Medium 4.3
Use of Less Trusted Source in GitLab
GitLab has remediated an issue in GitLab EE affecting all versions from 17.8 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that under certain conditions could have allowed an authenticated user to access paid AI features without a valid subscripti…
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Medium 5.9
Use of Less Trusted Source in hMailServer
Use of a less trusted source for the envelope sender in the external-account download of Progressive Robot hMailServer 6.0.0 through 6.3.6 allows a remote unauthenticated attacker to have mail they write in the name of a domain the server hosts sent on by the…
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Medium 4.8
Chi Client IP Spoofing in ClientIPFromXFF via X-Forwarded-For
In the Golang Chi web framework, the ClientIPFromXFF middleware skips any X-Forwarded-For entry in a configured trusted CIDR but never verifies that the direct TCP peer in http.Request.RemoteAddr belongs to that CIDR. A client that can reach the Go server dir…
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High 7.5
Use of Less Trusted Source in hMailServer
Use of a less trusted source in the DKIM signing of Progressive Robot hMailServer 6.0.0 through 6.3.6 allows a remote unauthenticated attacker to have mail they write signed with the DKIM key of a domain the server hosts, so that it passes DKIM and DMARC for …
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Low 3.7
Coder before 2.34.7 IP Spoofing via X-Forwarded-For Header
Coder before 2.34.7 contains an IP spoofing vulnerability in the ExtractRealIPAddress middleware that trusts the leftmost, client-supplied X-Forwarded-For value instead of the client IP appended by a reverse proxy. Attackers can send forged X-Forwarded-For va…
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Medium 5.9
Wheels through 4.1.1 derives its default production error-email address from the Host header of the request that starts…
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Medium 6.5
Wheels 4.0.6 through 4.1.2 lets an unauthenticated client switch a request into a separate test application context, in…
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Medium 6.5
In `api-gateway` versions till `1.7.3`, The default rate-limit key resolver, `ClientIpKeyResolver`, derives the per-cli…
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Critical 9.5
In Znuny through 7.3.6, an attacker can bypass specific standard login procedures and gain unauthorized access to sensi…
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Low 3.7
Speedtest Tracker through 1.15.0 IP Allowlist Bypass via X-Forwarded-For Spoofing
Speedtest Tracker through 1.15.0 contains an IP allowlist bypass vulnerability that allows unauthenticated remote attackers to evade ALLOWED_IPS and Prometheus allowlists by spoofing X-Forwarded-For headers. Because bootstrap/app.php trusts every peer as a pr…
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Medium 4.2
PairDrop through 1.11.2 IP Spoofing via cf-connecting-ip Header
PairDrop through 1.11.2 contains an IP spoofing vulnerability in Peer._setIP that allows remote attackers to join other networks' discovery rooms by supplying a forged cf-connecting-ip header. Attackers who know a victim's public IP can appear as a local devi…
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Medium 6.5
Pingvin Share X before 1.22.0 Rate Limit Bypass via Spoofed X-Forwarded-For
Pingvin Share X before 1.22.0 contains a rate limit bypass vulnerability that allows unauthenticated remote attackers to evade per-IP throttling because backend/src/main.ts unconditionally trusts proxy headers. Attackers can rotate spoofed X-Forwarded-For val…
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Low 3.7
Dell Secure Connect Gateway (SCG) Policy Manager, versions prior to 5.34.00.16, contains an Use of Less Trusted Source …
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Medium 5.3
Gophish through 0.12.1 Login Rate Limit Bypass via X-Forwarded-For Spoofing
Gophish through 0.12.1 contains a rate limit bypass vulnerability that allows unauthenticated attackers to evade /login throttling by spoofing X-Forwarded-For or X-Real-IP headers. Attackers can send a different forwarded address per request so the limiter ke…
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Low 1.9
Denuvo Anti-Tamper through 2026-03-04 allows bypass of a hypervisor presence check via CPUID interception (SimpleSvm.sy…
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Medium 6.5
simple-php-router through 5.4.1.7 IP restriction bypass via forwarding headers
simple-php-router through 5.4.1.7 contains an IP restriction bypass vulnerability in the IpRestrictAccess middleware that allows remote unauthenticated attackers to bypass IP whitelist and blacklist protections. Attackers can spoof X-Forwarded-For, CF-Connect…
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Medium 4.7
UnoPim 2.0.0 before 2.0.1 and 2.1.0 before 2.1.1 Cache Poisoning via X-Forwarded-Host
UnoPim versions before 2.0.1 and 2.1.1 trust all connecting clients as proxies and honor the X-Forwarded-Host header without validation, allowing unauthenticated attackers to inject arbitrary origins into admin layout pages. Attackers can set X-Forwarded-Host…
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Medium 6.5
Trusted Domain Project OpenDKIM Tag Tokenizer dkim.c dkim_process_set less trusted source
A security flaw has been discovered in Trusted Domain Project OpenDKIM up to 2.11.0. The impacted element is the function dkim_process_set of the file dkim.c of the component Tag Tokenizer. Performing a manipulation results in use of less trusted source. The …
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Medium 6.5
PyJWT accepts inconsistent OKP x/d JWKs, causing public/private key identity confusion
PyJWT is a Python implementation of JSON Web Token standards. From 2.1.0 until 2.15.0, PyJWT OKPAlgorithm.from_jwk in jwt/algorithms.py is affected because private-JWK import path does not compare the public key derived from d with x. This occurs when an OKP …
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Medium 6.5
vLLM 0.22.1 before 0.28.0 Incomplete Artifact Pin Propagation
vLLM is an inference and serving engine for large language models. In versions from 0.22.1 through 0.28.0, the operator-supplied model revision pin (--revision / --code-revision) is not propagated to several Hugging Face artifact loads for the FunAudioChat an…
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Medium 5.3
wpForo Forum 3.0.0 - 3.1.5 - Unauthenticated AI Credit Exhaustion via IP Rate Limit Bypass
The wpForo Forum WordPress plugin from 3.0.0 before 3.1.6 does not verify the source of client-supplied IP address headers before using them to key its per-visitor rate limit on paid AI requests, allowing unauthenticated attackers to bypass the limit by spoof…
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Critical 9.2
In OpenStack Zaqar before 22.0.2, WSGI transport mishandles the URL-Signature header. By sending a request with an empt…
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Medium 4.3
Use of Less Trusted Source in GitLab
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.1 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user to spoof merge request authorship and attribute co…
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Medium 4.3
Automation-controller: automation-controller: client ip spoofing in audit/access logs via unrestricted x-forwarded-for trust
A flaw was found in the Ansible Automation Platform automation-controller. In the shipped production configuration, the Controller trusts the client-supplied X-Forwarded-For header as the request's client IP without verifying that it originated from a trusted…
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Medium 5.3
Forminator Forms < 1.57.2.1 - Unauthenticated Poll Vote Limit Bypass via IP Spoofing
The Forminator Forms WordPress plugin before 1.57.2.1 does not verify that a request came from a trusted proxy before preferring client-supplied forwarding headers over the connecting address, and it uses that value both to enforce its per-visitor voting limi…
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Medium 5.8
Fabio - Incomplete fix for CVE-2025-48865: operator-configured trust headers (clientip/tls/requestid) still strippable via the Connection header
Fabio is an HTTP(S) and TCP router for deploying applications managed by consul. From 1.6.6 until 1.7.2, the CVE-2025-48865 fix in proxy/http_headers.go uses protectHeaders for a hardcoded set of forwarded headers but omits the operator-configured ClientIPHea…
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Critical 9.9
kcp front-proxy does not strip inbound X-Remote-* identity headers, allowing any authenticated client to inject groups/warrants and impersonate system:masters in any workspace
kcp is a Kubernetes-like control plane for form-factors and use-cases beyond Kubernetes and container workloads. Prior to 0.31.4 and 0.32.2, the kcp front-proxy does not remove inbound X-Remote-User, X-Remote-Group, or X-Remote-Extra-* identity headers before…
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Medium 6.3
djust: WebSocket/runtime reconstructed request omits the client Host, causing host/subdomain TenantResolvers to misresolve the tenant on the live path
djust provides Phoenix LiveView-style reactive server-side rendering for Django with Rust-powered performance. Prior to version 1.0.7, the WebSocket `handle_mount` and `ViewRuntime._build_request` rebuild an `HttpRequest` via `RequestFactory().get(...)` with …
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Critical 9.1
@fastify/proxy-addr vulnerable to IP spoofing via IPv4-mapped IPv6 trust subnet
@fastify/proxy-addr is a Fastify plugin that determines a request's client address behind trusted reverse proxies, and it backs Fastify request.ip and request.ips. In versions 3.0.0 through 5.1.0, a trust subnet written in IPv4-mapped IPv6 notation with an IP…
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Critical 9.1
proxy-addr vulnerable to IP spoofing via IPv4-mapped IPv6 trust subnet
proxy-addr is a Node.js module that determines a request's client address behind trusted reverse proxies, and it backs Express req.ip and req.ips. In versions 1.1.0 through 2.0.7, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, …
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Medium 4.3
Forgejo 13.0.0 through 16.0.4, when "[federation] ENABLED = true" is set, has a spoofing issue that affects identity in…
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Critical 9.1
Client IP Spoofing via Untrusted HTTP Headers in PayTR's PayTR Virtual Pos iFrame API WHMCS Module
Use of less trusted source vulnerability in PayTR Payment and Electronic Money Institution Inc. PayTR Virtual Pos iFrame API WHMCS Module allows Exploitation of Trusted Identifiers. This issue affects PayTR Virtual Pos iFrame API WHMCS Module: from v9.0.0 bef…
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Medium 6.1
fastify vulnerable to X-Forwarded-* spoofing under trustProxy hop-count
fastify is a fast and low overhead web framework for Node.js. Impact: the fix for CVE-2026-3635 added a guard on the forwarded-header reads used to derive the request host, protocol, hostname, ip, and ips values, checking the connecting address. That guard cl…
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Medium 6.5
go-chi chi before 5.3.0 IP Spoofing via RealIP Middleware
go-chi/chi through 5.2.1 contains an IP spoofing vulnerability in the RealIP middleware (middleware/realip.go). The realIP() function reads client-controlled headers (True-Client-IP, X-Real-IP, and X-Forwarded-For) and overwrites r.RemoteAddr without verifyin…