CVE-2026-74848
Apache APISIX: Cross-user response poisoning in serverless plugins
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Apache APISIX: Cross-user response poisoning in serverless plugins
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.
- Record
CVE-2026-74848- CVSS 4.0
- 7.0 High
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 - Weakness
- CWE-444
- Updated
- 2026-11-02
EUVDEUVD-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.
- Record
EUVD-2026-66958- CVSS 4.0
- 7.0 High
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-3g86-xcpq-wppj
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in...
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.
- Record
GHSA-3g86-xcpq-wppj- CVSS 4.0
- 7.0 High
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-444
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-74848- CVSS 4.0
- 7.0 High
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-444
- Updated
- 2026-11-02
OSV
Apache APISIX: Cross-user response poisoning in serverless plugins
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.
- Record
CVE-2026-74848- CVSS 4.0
- 7.0 High
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 - Weakness
- CWE-444
- Updated
- 2026-11-02
OSVBIT-apisix-2026-74848 No score
Apache APISIX: Cross-user response poisoning in serverless plugins
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.
- Record
BIT-apisix-2026-74848- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
apisixBitnami |
2.12.0 up to 3.18.0 | 3.18.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-74848 is a high vulnerability (CVSS 7.0) in Apache Apisix, published August 27, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.59%, the 48th percentile. Fixed in apisix 3.18.0.