01 Record

CVE-2026-73257

Mongoose: Content-Length + Transfer-Encoding coexistence enables request smuggling

CriticalPUBLISHEDCNA: GitHub_M

Base score9.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

02 Description

Mongoose: Content-Length + Transfer-Encoding coexistence enables request smuggling

Published

2026-08-20 17:30Z1 DAY AGO

Last updated

2026-08-20 19:34Z1 DAY AGO

Reserved

2026-08-11

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Critical (CVSS 9.1)

CVSS vector

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

Weaknesses

CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')Base

SSVC decision

ExploitationpocAutomatableyesTechnical Impacttotal

Data version

5.2

Document digest

2c3afe3c51ee60f137349817176711100f47c14cb5a8b12d1343719600b7e44e

VendorProductVersionsPlatforms

cesantamongoose< 7.22—