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Python CVE-2026-67182

| EUVDEUVD-2026-49895 MEDIUM
HTTP Request/Response Smuggling (CWE-444)
2026-07-28 VulnCheck GHSA-frmw-v2hf-gvj9
6.9
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
6.9 MEDIUM
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
SUSE
4.8 MEDIUM
AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
Jul 28, 2026 - 17:17 vuln.today
CVE Published
Jul 28, 2026 - 16:18 cve.org
MEDIUM 6.9

DescriptionCVE.org

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.

AnalysisAI

HTTP request smuggling in Rouille 0.3.3 through 3.6.2 allows remote attackers to bypass access controls by injecting bare line feed characters (0x0A) into header values. The framework forwards these headers verbatim to backends like Go net/http or Python http.server, which interpret the raw LF as a request delimiter, enabling a smuggled request with attacker-chosen method, path, and headers. Publicly available exploit code exists, increasing the risk for deployments using Rouille as a proxy.

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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Not-Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Not-Affected
SUSE Linux Enterprise Module for Development Tools 15 SP7 Not-Affected
SUSE Linux Enterprise Server 15 SP7 Not-Affected
SUSE Linux Enterprise Server 16.0 Affected

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CVE-2026-67182 vulnerability details – vuln.today

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