Is CVE-2026-6994 actively exploited?

No active exploitation of CVE-2026-6994 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-6994 be exploited remotely?

Yes. CVE-2026-6994 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-6994?

CVE-2026-6994 has a CVSS score of 6.3 (MEDIUM).

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MEDIUM

CVE-2026-6994

CWE-74Published: April 25, 2026· Updated: Apr 27, 2026

6.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:13.3th

Official 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.

NVD Source

Technical Analysis

CVE-2026-6994 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.