CVE-2026-74848

EUVD-2026-66958
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.
HTTP Request/Response Smuggling
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 46.89%
Affected Products (NVD)
VendorProductVersion
apacheapisix
2.12.0 ≤
𝑥
< 3.18.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://lists.apache.org/thread/xdgpszmw8dw4wvmfxy043d83m150kx3n
http://www.openwall.com/lists/oss-security/2026/08/26/12