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

Quick assessment

Affected
Apache Software Foundation Apache APISIX
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache APISIX是美国Apache基金会的一款API网关。 Apache APISIX 2.12.0版本至3.17.0版本存在输入验证错误漏洞，该漏洞源于HTTP请求/响应解析不一致，可能导致攻击者使其他客户端在serverless-plugin路由上收到攻击者选择或其他用户的响应。

CVSS 7.0 · High EPSS 0.59% · P48

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Apache Software Foundation Apache APISIX 2.12.0≤ 3.17.0 affected
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I. Basic Information for CVE-2026-74848

Vulnerability Information
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Vulnerability Title
Apache APISIX: Cross-user response poisoning in serverless plugins
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: CVE Program / CVE List V5
Vulnerability Title
Apache APISIX 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache APISIX是美国Apache基金会的一款API网关。 Apache APISIX 2.12.0版本至3.17.0版本存在输入验证错误漏洞，该漏洞源于HTTP请求/响应解析不一致，可能导致攻击者使其他客户端在serverless-plugin路由上收到攻击者选择或其他用户的响应。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache APISIX 2.12.0 ~ 3.17.0 -

II. Public POCs for CVE-2026-74848

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III. Intelligence Information for CVE-2026-74848

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Mailing List Discussions for CVE-2026-74848 (1)

Same Patch Batch · Apache Software Foundation · 2026-08-27 · 3 CVEs total

CVE-2026-75005 8.7 HIGH Apache APISIX: Unauthenticated CPU-exhaustion DoS
CVE-2026-75020 7.0 HIGH Apache APISIX: ldap-auth plugin cross-subtree identity impersonation

IV. Related Vulnerabilities

Same product: Apache APISIX
Same vendor: Apache Software Foundation
Same weakness: CWE-444

V. Comments for CVE-2026-74848

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