CVE-2026-6994

MEDIUM

Envoy Query Parameter header_mutation.cc params.add injection

Title source: cna
STIX 2.1

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.

References (5)

Core 5
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-359546 | Envoy Query Parameter header_mutation.cc params.add injection
https://vuldb.com/vuln/359546
Signature, Permissions Required signature permissions-required
VDB-359546 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/359546/cti
Third Party Advisory third-party-advisory
Submit #797241 | Envoy >= 1.33.0 Injection (CWE-74)
https://vuldb.com/submit/797241

Scores

CVSS v3 6.3
EPSS 0.0023
EPSS Percentile 13.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-707 CWE-74
Status published
Products (34)
None/Envoy 1.0
None/Envoy 1.1
None/Envoy 1.10
None/Envoy 1.11
None/Envoy 1.12
None/Envoy 1.13
None/Envoy 1.14
None/Envoy 1.15
None/Envoy 1.16
None/Envoy 1.17
... and 24 more
Published Apr 25, 2026
Tracked Since Apr 26, 2026