Payload: Untrusted redirect URL parameter exploit

中 6.1CVE-2026-105846 · GHSA-w84c-53h3-mc2g · 06/10/2026 公開 · 15/10/2026 更新

要点

CVE-2026-105846 は payload (payloadcms), @payloadcms/next, payload に影響する深刻度「中」 (CVSS 6.1) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.22%（全脆弱性の 13.2% より高い）。
対処：3.88.0, 4.0.0-canary.27 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
payload payloadcms	`= 4.0.0≥ 3.40.0, < 3.88.0`	`3.88.0`
@payloadcms/next npm	`≥ 3.31.0, < 3.88.0≥ 4.0.0-canary.0, < 4.0.0-canary.27`	`3.88.04.0.0-canary.27`
payload npm	`≥ 3.40.0, < 3.88.0≥ 4.0.0-canary.0, < 4.0.0-canary.27`	`3.88.04.0.0-canary.27`

概要

Impact

Under certain conditions, an attacker can craft a redirect link that sends a guest user to an untrusted destination after authenticating.

Patches

Users should upgrade Payload packages to >= 3.88.0 or >= 4.0.0-canary.27.

Workarounds

Upgrading is recommended. Until then, remove user-controlled redirect values from authentication flows or restrict them to known local paths.

NVD の説明

Payload is a free and open source headless content management system. In versions from 3.40.0 before 3.88.0 and canary versions before 4.0.0-canary.27, an attacker can craft a redirect URL parameter that sends a guest user to an untrusted destination after the authentication flow completes. This issue is fixed in versions 3.88.0 and 4.0.0-canary.27.