Vulnerability · Published Aug 27, 2026 · Assigned by apache

CVE-2026-74848Apache APISIX: Cross-user response poisoning in serverless plugins

High 7.0

In plain English

A high-severity security flaw in Apache APISIX from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).

Severity (CVSS 4.0)7.0High

Exploit odds (30 days)0.6%top 51.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Apache Software Foundation	Apache APISIX	2.12.0 – through 3.17.0

Weakness: CWE-444 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

In plain English

Official description

Affected products (as reported)

References