Vulnerability/
https://seclists.org/oss-sec/2026/q3/590

https://seclists.org/oss-sec/2026/q3/590: CVE-2026-74848: Apache APISIX: Cross-user sponse poisoning in serverless plugins

Q: Which deployments are affected?

Apache APISIX versions 2.12.0 through 3.17.0 are affected. The described impact occurs on routes using serverless plugins.

Q: What can an attacker achieve?

An attacker could cause other clients on serverless-plugin routes to receive attacker-chosen responses or responses belonging to other users.

Q: What should I do to remediate the issue?

Upgrade Apache APISIX to version 3.18.0, which fixes the issue.

Published Aug 26, 2026

Updated

Affected Software

1 affected component

Apache APISIX>=2.12.0<=3.17.0

Frequently Asked Questions

Which deployments are affected?

Apache APISIX versions 2.12.0 through 3.17.0 are affected. The described impact occurs on routes using serverless plugins.

What can an attacker achieve?

An attacker could cause other clients on serverless-plugin routes to receive attacker-chosen responses or responses belonging to other users.

What should I do to remediate the issue?

Upgrade Apache APISIX to version 3.18.0, which fixes the issue.

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Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

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