CVE-2026-88829

HighCVSS 7.2/10Last modified Oct 15, 2026

Description

A flaw was found in BusyBox httpd's reverse proxy feature. When the proxy is configured to forward requests matching a URL prefix to a backend server, only the first HTTP request on a TCP connection has its path rewritten. An attacker can send a pipelined second request that is relayed verbatim to the backend, bypassing the configured path restrictions. This allows accessing arbitrary paths on the backend server that were not intended to be exposed through the proxy.

Metrics

CVSS 3.1 7.2/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-444

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published: Oct 14, 2026
Last modified: Oct 15, 2026
NVD status: Awaiting Analysis

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