CVE-2026-63041: Reliance on Untrusted Inputs in a Security Decision vulnerability in Apache APISIX. This vulnerability allows

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HIGH 8.8WATCHLISTUPGRADE

CVE-2026-63041 is a high-severity flaw (CVSS 8.8) affecting apisix. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Reliance on Untrusted Inputs in a Security Decision vulnerability in Apache APISIX. This vulnerability allows an attacker to escalate privilege or perform an authorization bypass by sending certain values that the attach-consumer-label plugin does not sanitise correctly. This issue affects Apache APISIX: from 3.11.0 through 3.17.0. Users are recommended to upgrade to version 3.18.0, which fixes the issue.

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-807
Published	2026-08-26
Last modified	2026-08-27

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

Last updated 2026-08-27 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-26 12:16 UTCPublished CVE record published
2026-08-27 19:35 UTCUpdated Record last modified

apache apisix UPGRADE

Affected: >= 3.11.0 and < 3.18.0

Fixed in: 3.18.0

Safe to downgrade to: a release before 3.11.0

1. Check installed version

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

2. UPGRADE to 3.18.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade apisix

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade apisix

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 3.11.0 (Debian / Ubuntu)

apt-cache madison apisix sudo apt install apisix=<VERSION_BEFORE_3.11.0> sudo apt-mark hold apisix

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list apisix sudo dnf downgrade apisix-<VERSION_BEFORE_3.11.0> 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-2026-63041?

apisix: upgrade to 3.18.0. Exact commands for each OS are on this page.

Is CVE-2026-63041 being exploited?

CVE-2026-63041 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-2026-63041 affect?

CVE-2026-63041 affects apisix. Severity is high (CVSS 8.8). Reliance on Untrusted Inputs in a Security Decision vulnerability in Apache APISIX. This vulnerability allows an attacker to escalate privilege or perform an authorization bypass by sending certain values that the attach-consumer-label plu

How urgent is CVE-2026-63041?

Priority 49/100. High severity; On your watchlist

Software pages

Apache APISIX vulnerabilities

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References

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