CVE-2026-94250 PUBLISHED

Apache APISIX: Batch response aggregation can exhaust worker memory

Assigner: apache
Reserved: 21.09.2026 Published: 01.10.2026 Updated: 01.10.2026

Allocation of resources without limits or throttling vulnerability in batch-requests plugin in Apache APISIX.

An unauthenticated caller can drive a gateway worker into OOM via a route where the batch-requests plugin is used and the batch endpoint is publicly exposed. This issue affects Apache APISIX: from 1.3.0 through 3.18.0.

Users are recommended to upgrade to version 3.19.0, which fixes the issue.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.2

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	Present	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Apache Software Foundation
Product	Apache APISIX
Versions	Default: unaffected affected from 1.3.0 to 3.18.0 (incl.)

Credits

Ziyue reporter
shreemaan-abhishek remediation developer
shreemaan-abhishek coordinator

References

https://lists.apache.org/thread.html/l7o9w8pw3w3f12vf9ybm7xtfzoo6qct4

Problem Types

CWE-770 Allocation of resources without limits or throttling CWE