High · 7.0 CVE-2026-74848 EUVD-2026-66958GHSA-3g86-xcpq-wppj

Apache APISIX: Cross-user response poisoning in serverless plugins

Published Aug 27, 2026 · Updated Aug 27, 2026 · Assigned by apache

Description

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache APISIX.

An attacker could make other clients receive attacker-chosen or other users' responses on serverless-plugin routes.

This issue affects Apache APISIX: from 2.12.0 through 3.17.0.

Users are recommended to upgrade to version 3.18.0, which fixes the issue.

Vendor	Product	Affected	Fixed
Apache Software Foundation	Apache APISIX	2.12.0 – ≤ 3.17.0	—