# CVE-2026-6994

> Vulnerability · severity: **MEDIUM** (CVSS 6.3).

## Description

A weakness has been identified in Envoy up to 1.33.0. Affected is the function params.add of the file source/extensions/filters/http/header_mutation/header_mutation.cc of the component Query Parameter Handler. This manipulation causes injection. Remote exploitation of the attack is possible. Patch name: f8f4f1e02fdc64ecd4acf2d903208dd7285ad3a4. It is suggested to install a patch to address this issue.

## Key facts

- **CVE ID:** CVE-2026-6994
- **Published:** 2026-04-25
- **CVSS severity:** MEDIUM
- **CVSS base score:** 6.3
- **CWE codes:** CWE-74, CWE-707

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-6994

## Citation

> AI Analytics. CVE-2026-6994. Retrieved 2026-07-25 from https://api.ai-analytics.org/cve/CVE-2026-6994. Derived from NIST NVD. Licensed CC0.

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