Apache APISIX: Unauthenticated CPU-exhaustion DoS
Published Aug 27, 2026
8.7
HIGHCVSS 4.0
EPSS 0.74%
Description
Inefficient Algorithmic Complexity vulnerability in Apache APISIX.
A single small request can pin a gateway worker at 100% CPU for an extended period in graphql-limit-count routes.
This issue affects Apache APISIX: 3.17.0.
Users are recommended to upgrade to version 3.18.0, which fixes the issue.
Affected products
-
- Version 3.17.0StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache APISIX | unaffected |
|
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/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/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Aug 27, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
Aug–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.74% (0.00740) | 53.02th | v5 (v2026.06.15) |
| Aug 27, 2026 | 0.45% (0.00448) | 37.22th | v5 (v2026.06.15) |
References (2)
- http://www.openwall.com/lists/oss-security/2026/08/26/13 Mailing ListThird Party Advisory
- https://lists.apache.org/thread/wfs7c9l8sokrh9hzv84lno12nx2zxpjk vendor-advisoryMailing ListVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/08/26/13 | Mailing ListThird Party Advisory | |
| https://lists.apache.org/thread/wfs7c9l8sokrh9hzv84lno12nx2zxpjk | vendor-advisoryMailing ListVendor Advisory |
Change history (0)
No recorded changes yet.