> CVE-2026-6994 [MEDIUM]

« BACK_TO_HOME
PUBLISHED
2026-04-25 19:16
MODIFIED
2026-04-25 19:16
CVSS_SCORE V3
5.3
EPSS (Prob. Exploit)
0.23%
Top 86.4%
DATA SOURCES:
NVD 🔗 2026-04-25 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-08 OSV 🔗 2026-11-02

> 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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_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/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

> MÉTRIQUES CVSS DÉTAILLÉES

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
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
Low (L)
Divulgation limitée d'informations
I (Impact Intégrité)
Integrity Impact
Low (L)
Modification limitée des données possible
A (Impact Disponibilité)
Availability Impact
Low (L)
Interruption partielle du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
Low
Divulgation limitée d'informations
Intégrité
Low
Modification limitée des données possible
Disponibilité
Low
Interruption partielle du service possible

> WEAKNESSES

CWE-74 CWE-707

> CWE DETAILED DESCRIPTIONS

CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component - The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. | CWE-707: Improper Neutralization - The product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties are met before being used when received from an upstream component, or before being sent to a downstream component.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Envoy Query Parameter header_mutation.cc params.add injection

AFFECTED PACKAGES:
Unknown / Unknown
34 versions affected

> HISTORIQUE DES MODIFICATIONS

Première apparition
25/04/2026 19:16
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') - The product constructs all or part of a command, data structure, or record using externally...
Nouvelle valeur:
CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component - The product constructs all or part of a command, data structure, or record using externally-influenced in...
📊 ENRICHISSEMENT 01/05/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') - The product constructs all or part of a command, data structure, or record using externally...
Total des modifications: 2 Dernière mise à jour: 1 week ago

> REFERENCES

https://github.com/envoyproxy/envoy/commit/f8f4f1e02fdc64ecd4acf2d903208dd7285ad...
https://github.com/envoyproxy/envoy/pull/43502/
https://vuldb.com/submit/797241
https://vuldb.com/vuln/359546
https://vuldb.com/vuln/359546/cti
« BACK_TO_HOME