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CVE Vulnerability Details :
CVE-2026-6994
PUBLISHED
More InfoOfficial Page
Assigner-VulDB
Assigner Org ID-1af790b2-7ee1-4545-860a-a788eba489b5
View Known Exploited Vulnerability (KEV) details
Published At-25 Apr, 2026 | 19:00
Updated At-27 Apr, 2026 | 17:17
Rejected At-
▼CVE Numbering Authority (CNA)
Envoy Query Parameter header_mutation.cc params.add injection

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.

Affected Products
Vendor
n/a
Product
Envoy
Modules
  • Query Parameter Handler
Versions
Affected
  • 1.0
  • 1.1
  • 1.2
  • 1.3
  • 1.4
  • 1.5
  • 1.6
  • 1.7
  • 1.8
  • 1.9
  • 1.10
  • 1.11
  • 1.12
  • 1.13
  • 1.14
  • 1.15
  • 1.16
  • 1.17
  • 1.18
  • 1.19
  • 1.20
  • 1.21
  • 1.22
  • 1.23
  • 1.24
  • 1.25
  • 1.26
  • 1.27
  • 1.28
  • 1.29
  • 1.30
  • 1.31
  • 1.32
  • 1.33.0
Problem Types
TypeCWE IDDescription
CWECWE-74Injection
CWECWE-707Improper Neutralization
Type: CWE
CWE ID: CWE-74
Description: Injection
Type: CWE
CWE ID: CWE-707
Description: Improper Neutralization
Metrics
VersionBase scoreBase severityVector
4.05.3MEDIUM
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
3.16.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C
3.06.3MEDIUM
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
2.06.5N/A
AV:N/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:OF/RC:C
Version: 4.0
Base score: 5.3
Base severity: MEDIUM
Vector:
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
Version: 3.1
Base score: 6.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C
Version: 3.0
Base score: 6.3
Base severity: MEDIUM
Vector:
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
Version: 2.0
Base score: 6.5
Base severity: N/A
Vector:
AV:N/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:OF/RC:C
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
reporter
lukefr09 (VulDB User)
Timeline
EventDate
Advisory disclosed2026-04-24 00:00:00
VulDB entry created2026-04-24 02:00:00
VulDB entry last update2026-04-24 21:54:49
Event: Advisory disclosed
Date: 2026-04-24 00:00:00
Event: VulDB entry created
Date: 2026-04-24 02:00:00
Event: VulDB entry last update
Date: 2026-04-24 21:54:49
Replaced By
Rejected Reason
References
HyperlinkResource
https://vuldb.com/vuln/359546
vdb-entry
technical-description
https://vuldb.com/vuln/359546/cti
signature
permissions-required
https://vuldb.com/submit/797241
third-party-advisory
https://github.com/envoyproxy/envoy/pull/43502/
issue-tracking
patch
https://github.com/envoyproxy/envoy/commit/f8f4f1e02fdc64ecd4acf2d903208dd7285ad3a4
patch
Hyperlink: https://vuldb.com/vuln/359546
Resource:
vdb-entry
technical-description
Hyperlink: https://vuldb.com/vuln/359546/cti
Resource:
signature
permissions-required
Hyperlink: https://vuldb.com/submit/797241
Resource:
third-party-advisory
Hyperlink: https://github.com/envoyproxy/envoy/pull/43502/
Resource:
issue-tracking
patch
Hyperlink: https://github.com/envoyproxy/envoy/commit/f8f4f1e02fdc64ecd4acf2d903208dd7285ad3a4
Resource:
patch
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found