CVE-2026-74848

Apache APISIX: Cross-user response poisoning in serverless plugins

Published Aug 27, 2026 CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:apache:apisix:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

Type Values Removed Values Added
References
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Apache
Apache apisix
Vendors & Products Apache
Apache apisix
Type Values Removed Values Added
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.
Title Apache APISIX: Cross-user response poisoning in serverless plugins
Weaknesses CWE-444
References
Metrics cvssV4_0

{'score': 7, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Aug 27, 2026, 12:05 PM
Reserved
Aug 17, 2026, 8:09 AM
Status
Analyzed
Published
Aug 27, 2026, 10:16 AM
Modified
Aug 31, 2026, 7:00 PM