CVE-2026-74848: CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in Apache Software Foundation Apache APISIX
Description
CVE-2026-74848 is a high-severity vulnerability in Apache APISIX affecting versions from 2.12.0 through 3.17.0. It involves inconsistent interpretation of HTTP requests, known as HTTP Request/Response Smuggling, which can cause clients to receive responses intended for other users on serverless-plugin routes. The issue is fixed in version 3.18.0.
CVSS v4.0
Score 7.0high
Affected software
Apache Software Foundation
Apache APISIX
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Apache APISIX (CVE-2026-74848) is classified as CWE-444, involving inconsistent interpretation of HTTP requests leading to HTTP Request/Response Smuggling. An attacker exploiting this flaw could cause other clients to receive attacker-chosen or other users' responses when accessing serverless-plugin routes. The affected versions range from 2.12.0 through 3.17.0. The vendor has addressed the issue in version 3.18.0.
Potential Impact
Exploitation of this vulnerability could allow an attacker to manipulate HTTP request handling such that clients receive responses not intended for them, potentially leading to information disclosure or confusion in client-server communication on serverless-plugin routes. This can undermine the integrity and confidentiality of responses served by Apache APISIX in the affected versions.
Mitigation Recommendations
Users should upgrade Apache APISIX to version 3.18.0 or later, where this vulnerability has been fixed. No other official remediation or temporary fixes are indicated. Patch status is confirmed by the vendor's recommendation to upgrade.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-08-17T08:09:53.876Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a9001f3acd9273b491092c0
Added to database: 08/27/2026, 09:22:59 UTC
Last enriched: 09/09/2026, 12:37:25 UTC
Last updated: 10/09/2026, 06:48:19 UTC
Views: 59
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