Hi,

The following vulnerability was published for busybox.

CVE-2026-88829[0]:
| 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.

https://bugzilla.redhat.com/show_bug.cgi?id=2531343


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-88829
https://www.cve.org/CVERecord?id=CVE-2026-88829

Please adjust the affected versions in the BTS as needed.