GO-2026-5382 Ech0 Comment Panel Endpoints Missing RequireScopes Middleware — Scoped Access Token Bypass in github.com/lin-snow/ech0

Ech0 Comment Panel Endpoints Missing RequireScopes Middleware — Scoped Access Token Bypass in github.com/lin-snow/ech0. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive...

GO-2026-5328 Ech0: Missing authorization on dashboard log endpoints allows low-privilege users to access sensitive system logs in github.com/lin-snow/ech0

Ech0: Missing authorization on dashboard log endpoints allows low-privilege users to access sensitive system logs in github.com/lin-snow/ech0. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is...

GO-2026-5375 ech0's acess tokens with expiry=never cannot be revoked: logout panics, delete does not blacklist JTI in github.com/lin-snow/ech0

ech0's acess tokens with expiry=never cannot be revoked: logout panics, delete does not blacklist JTI in github.com/lin-snow/ech0...

GO-2026-5259 Ech0 has Server-Side Request Forgery (SSRF) via Connect Handler fetchPeerConnectInfo in github.com/lin-snow/ech0

Ech0 has Server-Side Request Forgery SSRF via Connect Handler fetchPeerConnectInfo in github.com/lin-snow/ech0...

GO-2026-5100 Ech0's RSS feed renders unescaped tag names and raw-HTML markdown, stored XSS against subscribers in github.com/lin-snow/ech0

Ech0's RSS feed renders unescaped tag names and raw-HTML markdown, stored XSS against subscribers in github.com/lin-snow/ech0...

GO-2026-5123 Ech0: Scoped admin access tokens can bypass least-privilege controls on privileged endpoints, including backup export in github.com/lin-snow/ech0

Ech0: Scoped admin access tokens can bypass least-privilege controls on privileged endpoints, including backup export in github.com/lin-snow/ech0. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this ...

Exploit for Server-Side Request Forgery in Ech0

CVE-2026-35037 Ech0 SSRF Lab This repository contains a local...

Improper Handling of Exceptional Conditions

Overview Affected versions of this package are vulnerable to Improper Handling of Exceptional Conditions in the token revocation process. An attacker can maintain unauthorized access by using a stolen access token that was issued with no expiration, as the token cannot be invalidated through...

Improper Use of Validation Framework

Overview Affected versions of this package are vulnerable to Improper Use of Validation Framework in the parseAndValidateClientRedirect process. An attacker can obtain OAuth exchange codes intended for other users by crafting a redirecturi that matches an allowed scheme and host but specifies a...

PT-2026-81283

Name of the Vulnerable Software and Affected Versions Ech0 versions prior to 4.7.3 Description Failure to properly revoke access tokens created with the never-expire option allows attackers to maintain perpetual authenticated access following token theft. This occurs because three revocation...

PT-2026-81278

Name of the Vulnerable Software and Affected Versions Ech0 versions prior to 4.7.3 Description An issue exists where the fetchPeerConnectInfo function uses unvalidated HTTP requests instead of safe request methods with URL validation. Authenticated attackers can supply arbitrary URLs to access...

PT-2026-41607

Summary No authentication is required to invoke PUT /api/echo/like/:id. The handler is registered on the public router group. The service increments fav count for the given echo without checking identity, without a per-user limit, and without CSRF tokens. A remote client can arbitrarily inflate...

PT-2026-41605

Summary parseAndValidateClientRedirect at internal/service/auth/auth.go:448 validates OAuth client-redirect URIs by comparing only scheme and host against the admin-configured allowlist. Path, query, and fragment are ignored. The initiator at /oauth/:provider/login embeds the caller-supplied...

Arbitrary File Upload

Overview Affected versions of this package are vulnerable to Arbitrary File Upload via the file upload. An administrator can execute arbitrary JavaScript in the context of the application by uploading a crafted SVG or HTML file containing malicious scripts, which are then served to users without...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the validateWebhookURL function. An administrator can access internal network resources and cloud metadata endpoints by submitting webhook URLs that use hostnames resolving to private IP addresses,...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the validateWebhookURL function. An administrator can access internal network resources and cloud metadata endpoints by submitting webhook URLs that use hostnames resolving to private IP addresses,...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization in the dashboard log endpoints. An attacker can access sensitive operational log data by sending authenticated requests to the log endpoints without requiring elevated privileges. Remediation Upgrade...

PT-2026-81288

Name of the Vulnerable Software and Affected Versions Ech0 versions prior to 4.4.3 Description Insufficient authorization checks on system log endpoints allow authenticated non-admin users to read and stream all server logs. This enables the collection of reconnaissance data, such as internal fil...

PT-2026-81290

Name of the Vulnerable Software and Affected Versions Ech0 versions prior to 4.4.3 Description A server-side request forgery SSRF issue exists in the validateWebhookURL function within webhook setting service.go. The function only validates literal IP addresses using net.ParseIP and does not reje...

PT-2026-33894

Summary Ech0 allows any authenticated user to read historical system logs and subscribe to live log streams because the dashboard log endpoints validate only that a JWT is present and valid, but do not require an administrator role or privileged scope. Impact Any valid user session can access GET...