Envoy Query Parameter header_mutation.cc params.add injection

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-6994
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-25 19:16:00 UTC
Updated2026-04-25 19:16:00 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v4.0 5.3 MEDIUM from [email protected]

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-74 | CWE-707 | CWE-74 Injection | CWE-707 Improper Neutralization

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary5.3MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/C...
4.0CNADECLARED5.3MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
3.1[email protected]Primary6.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
3.1CNADECLARED6.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C
3.0CNADECLARED6.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C
2.0[email protected]Secondary6.5AV:N/AC:L/Au:S/C:P/I:P/A:P
2.0CNADECLARED6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:OF/RC:C

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Envoy affected 1.0 Not specified
CNA Na Envoy affected 1.1 Not specified
CNA Na Envoy affected 1.2 Not specified
CNA Na Envoy affected 1.3 Not specified
CNA Na Envoy affected 1.4 Not specified
CNA Na Envoy affected 1.5 Not specified
CNA Na Envoy affected 1.6 Not specified
CNA Na Envoy affected 1.7 Not specified
CNA Na Envoy affected 1.8 Not specified
CNA Na Envoy affected 1.9 Not specified
CNA Na Envoy affected 1.10 Not specified
CNA Na Envoy affected 1.11 Not specified
CNA Na Envoy affected 1.12 Not specified
CNA Na Envoy affected 1.13 Not specified
CNA Na Envoy affected 1.14 Not specified
CNA Na Envoy affected 1.15 Not specified
CNA Na Envoy affected 1.16 Not specified
CNA Na Envoy affected 1.17 Not specified
CNA Na Envoy affected 1.18 Not specified
CNA Na Envoy affected 1.19 Not specified
CNA Na Envoy affected 1.20 Not specified
CNA Na Envoy affected 1.21 Not specified
CNA Na Envoy affected 1.22 Not specified
CNA Na Envoy affected 1.23 Not specified
CNA Na Envoy affected 1.24 Not specified
CNA Na Envoy affected 1.25 Not specified
CNA Na Envoy affected 1.26 Not specified
CNA Na Envoy affected 1.27 Not specified
CNA Na Envoy affected 1.28 Not specified
CNA Na Envoy affected 1.29 Not specified
CNA Na Envoy affected 1.30 Not specified
CNA Na Envoy affected 1.31 Not specified
CNA Na Envoy affected 1.32 Not specified
CNA Na Envoy affected 1.33.0 Not specified

References

ReferenceSourceLinkTags
vuldb.com/vuln/359546/cti [email protected] vuldb.com
github.com/envoyproxy/envoy/commit/f8f4f1e02fdc64ecd4acf2d903208dd7285ad3a4 [email protected] github.com
vuldb.com/submit/797241 [email protected] vuldb.com
github.com/envoyproxy/envoy/pull/43502 [email protected] github.com
vuldb.com/vuln/359546 [email protected] vuldb.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: lukefr09 (VulDB User) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-04-24T00:00:00.000ZAdvisory disclosed
CNA2026-04-24T02:00:00.000ZVulDB entry created
CNA2026-04-24T21:54:49.000ZVulDB entry last update
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