CVE-2026-55455

描述

Appsmith is a platform to build admin panels, internal tools, and dashboards. Prior to 2.1, the outbound HTTP host filter applied by WebClientUtils (used by the REST API and GraphQL datasource plugins) validates hosts against an exact-match string denylist. The comprehensive address-class check (loopback, any-local, link-local, fc00::/7) exists only on a separate code path used by SMTP, not by the HTTP plugin path. As a result, an authenticated user can craft outbound requests that reach loopback-bound services inside the container. This vulnerability is fixed in 2.1.

如何修補 CVE-2026-55455

要修補 CVE-2026-55455,請將受影響套件升級到下列已修補版本。

• —升級至 2.1.0 或更新版本

CVE-2026-55455 正在被利用嗎?

低 — EPSS 為 0.2%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 2.1.0

CVSS 分數

參考連結(2)

• WEBgithub.com/appsmithorg/appsmith/security/advisories/GHSA-m23h-pvf3-2m7p
• WEBnvd.nist.gov/vuln/detail/CVE-2026-55455