Name: CVE-2026-73276: Inconsistent Interpretation of HTTP Requests
Creator: Rapid7
Published: 2026-09-01T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-73276, CWE-444, CVSS 8.3, EPSS 0.00577

Gracefulness code ignored cases that should be rejected, resulting in possible HTTP Request Smuggling opportunities.

This issue affects OTP from OTP 22.2 before OTP 27.3.4.17, from OTP 28.0 before OTP 28.5.0.6, and from OTP 29.0 before OTP 29.0.6, corresponding to inets from 7.1.2 before 9.3.2.7, from 9.4 before 9.6.2.3, and from 9.7 before 9.7.2.

CVSS Details

CVSS 4.0 Base Score: 8.3 (HIGH)
CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/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)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Freebsd	—	Upgrade erlang-runtime27Upgrade erlangUpgrade erlang-runtime29Upgrade erlang-runtime28	Sep 2, 2026	Sep 1, 2026
Ubuntu	—	Upgrade erlang-megaco (Ubuntu Pro)Upgrade erlang-ssl (Ubuntu Pro)Upgrade erlang-inets (Ubuntu Pro)Upgrade erlang-base-hipe (Ubuntu Pro)Upgrade erlang-snmpUpgrade erlang-snmp (Ubuntu Pro)Upgrade erlang-public-keyUpgrade erlang-base (Ubuntu Pro)Upgrade erlang-eldapUpgrade erlang-baseUpgrade erlang-megacoUpgrade erlang-sslUpgrade erlang-eldap (Ubuntu Pro)Upgrade erlang-inets	Sep 29, 2026	Sep 28, 2026

Prioritise with Active Threat Intelligence

With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.

Explore Intelligence Hub

MDR Buyer's Guide

Global Threat Landscape Report

Grow your business

CVSS Details

Covered by Rapid7

Prioritise with Active Threat Intelligence