CVE-2026-33746— Convoy 数据伪造问题漏洞

Convoy: JWT Signature Verification Bypass Allows Authentication as Arbitrary Users

Convoy is a KVM server management panel for hosting businesses. From version 3.9.0-beta to before version 4.5.1, the JWTService::decode() method did not verify the cryptographic signature of JWT tokens. While the method configured a symmetric HMAC-SHA256 signer via lcobucci/jwt, it only validated time-based claims (exp, nbf, iat) using the StrictValidAt constraint. The SignedWith constraint was not included in the validation step. This means an attacker could forge or tamper with JWT token payloads — such as modifying the user_uuid claim — and the token would be accepted as valid, as long as the time-based claims were satisfied. This directly impacts the SSO authentication flow (LoginController::authorizeToken), allowing an attacker to authenticate as any user by crafting a token with an arbitrary user_uuid. This issue has been patched in version 4.5.1.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

认证机制不恰当

Convoy 数据伪造问题漏洞

Convoy是Convoy开源的一个为托管提供商和爱好者量身定制的现代平台。 Convoy 3.9.0-beta至4.5.1之前版本存在数据伪造问题漏洞，该漏洞源于JWT令牌签名未验证，可能导致身份验证绕过。

N/A

N/A