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 中存在 HTTP 请求解释不一致（“HTTP 请求/响应走私”）漏洞。 攻击者可以使其他客户端接收到由攻击者选择的响应或其他用户的响应，这发生在 serverless-plugin 路由上。 该问题影响 Apache APISIX 2.12.0 至 3.17.0 版本。 建议用户升级至 3.18.0 版本，该版本已修复此问题。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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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
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
| # | POC Description | Source Link | Shenlong Link |
|---|
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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 |
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V. Comments for CVE-2026-74848
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