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PUBLISHED

2026-07-28 17:17

MODIFIED

2026-07-28 17:17

CVSS_SCORE V3

6.9

EPSS (Prob. Exploit)

0.63%

Top 50.5%

DATA SOURCES:

NVD 🔗 2026-07-28 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 OSV 🔗 2026-08-03

> DESCRIPTION

Rouille 0.3.3 through 3.6.2 contains an HTTP request smuggling vulnerability that allows remote attackers to bypass access controls by injecting bare line feed characters (0x0A) into client-supplied request header values that are copied verbatim to upstream connections without validation. Attackers can craft a header value containing a complete additional HTTP request that is interpreted as a separate request by backends such as Go net/http and Python http.server, causing the backend to process a smuggled request with attacker-chosen method, path, and headers that bypasses the rouille handler's access control logic.

> 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:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:H/SI:L/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:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:H/SI:L/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	None (N)	Aucune authentification requise
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	None (N)	Aucune divulgation d'informations
I (Impact Intégrité) Integrity Impact	Low (L)	Modification limitée des données possible
A (Impact Disponibilité) Availability Impact	None (N)	Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité

None

Aucune divulgation d'informations

Intégrité

Low

Modification limitée des données possible

Disponibilité

None

Aucune interruption de service

> WEAKNESSES

CWE-444

> CWE DETAILED DESCRIPTIONS

CWE-444: Inconsistent Interpretation of HTTP Requests - The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Rouille 0.3.3 - 3.6.2 HTTP Request Smuggling via proxy Header Injection

AFFECTED PACKAGES:

Unknown / Unknown

11 versions affected

> HISTORIQUE DES MODIFICATIONS

Première apparition

28/07/2026 17:17

Source: NVD

📊 ENRICHISSEMENT 01/11/2026 06:59

CWE

Champ modifié: Description CWE

Ancienne valeur:

CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') - The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow betwe...

Nouvelle valeur:

CWE-444: Inconsistent Interpretation of HTTP Requests - The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a c...

📊 ENRICHISSEMENT 01/08/2026 06:01

CWE