# CVE-2026-63041: Apache APISIX: attach-consumer-label does not strip client-supplied consumer-label headers

> Attackers can bypass authorization or escalate privileges by sending unsanitized consumer-label headers to the attach-consumer-label plugin.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 26 Aug 2026
- **Updated:** 26 Aug 2026
- **Also known as:** BIT-apisix-2026-63041, GHSA-h244-w3g4-3cv4, MINI-66g2-j7hg-qc4h

## What is CVE-2026-63041?

CVE-2026-63041 is a medium-severity authentication bypass vulnerability in Apache APISIX, published on 26 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

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.

Weakness: CWE-807 (Reliance on Untrusted Inputs in a Security Decision)

## Which versions are affected by CVE-2026-63041?

1 open source package ship an affected version, including apisix. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `apisix` | Bitnami | From 3.11.0 | 3.18.0 |

Products: Apache Apisix.

## How do I fix CVE-2026-63041?

Upgrade apisix to 3.18.0 or later.

## Is CVE-2026-63041 being exploited?

There is no known exploitation of CVE-2026-63041 in the wild and no public exploit code.

## Other vulnerabilities in Apache APISIX

- [CVE-2022-24112](https://insights.sbomify.com/CVE-2022-24112/): Apache APISIX Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2022-25757](https://insights.sbomify.com/CVE-2022-25757/): Apache APISIX: the body_schema check in request-validation plugin can be bypassed (critical 9.8)
- [CVE-2026-31908](https://insights.sbomify.com/CVE-2026-31908/): Apache APISIX: forward auth plugin allows header injection (critical 9.1)
- [CVE-2026-75005](https://insights.sbomify.com/CVE-2026-75005/): Apache APISIX: Unauthenticated CPU-exhaustion DoS (high 8.7)
- [CVE-2025-27446](https://insights.sbomify.com/CVE-2025-27446/): Privilege escalation in Apache APISIX Java Plugin Runner (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-63041 and fix it if it is affected.

What it is: CVE-2026-63041 is a medium-severity authentication bypass vulnerability in Apache APISIX, published on 26 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-63041 in the wild and no public exploit code.

Affected packages and fixed versions:
- apisix (Bitnami): affected from 3.11.0; fixed in 3.18.0

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-63041/ (Markdown: https://insights.sbomify.com/CVE-2026-63041/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-63041
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-63041
- OSV: https://osv.dev/vulnerability/CVE-2026-63041

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-63041/
Summaries are generated and may contain mistakes; the official description above is the record.