{"id":"CVE-2026-88829","title":"A flaw was found in BusyBox httpd's reverse proxy feature","summary":"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 ca…","severity":"high","cvss":7.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","cwe":["CWE-444"],"published":"2026-10-14","updated":"2026-10-14","sourceUpdated":"2026-10-14T10:17:57.077","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-88829","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-88829","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2531343","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88829.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-88829"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88829"}],"tags":["nvd","csaf","vex","red-hat"],"ingestedAt":"2026-10-14T10:25:41.202Z","vendor":"Red Hat","product":"Red Hat Hardened Images","affected":["hardened_images"],"slug":"CVE-2026-88829","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Hardened Images · no fix planned: Red Hat Hardened Images · updated 2026-10-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88829.json)","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":39.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}