CVE-2026-75005: Inefficient Algorithmic Complexity vulnerability in Apache APISIX. A single small request can pin a gateway

This month

HIGH 7.5REMOTEWATCHLISTDOWNGRADE

CVE-2026-75005 is a high-severity flaw (CVSS 7.5) affecting apisix. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-407
Published	2026-08-27
Last modified	2026-08-28

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-08-28 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-27 10:16 UTCPublished CVE record published
2026-08-28 20:40 UTCUpdated Record last modified

apache apisix DOWNGRADE

Affected: 3.17.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.17.0

1. Check installed version

apt-cache policy apisix || rpm -q apisix || apisix --version

2. No fixed release: DOWNGRADE to a release before 3.17.0 (Debian / Ubuntu)

apt-cache madison apisix sudo apt install apisix=<VERSION_BEFORE_3.17.0> sudo apt-mark hold apisix

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list apisix sudo dnf downgrade apisix-<VERSION_BEFORE_3.17.0> sudo dnf versionlock add apisix

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-75005?

apisix: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-75005 being exploited?

CVE-2026-75005 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-75005 affect?

CVE-2026-75005 affects apisix. Severity is high (CVSS 7.5). 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 ar

How urgent is CVE-2026-75005?

Priority 50/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Apache APISIX vulnerabilities

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References

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