DEBIAN-CVE-2026-54388
Tinyproxy through 1.11.3, fixed in commit 364cdb6, fails to reject requests containing multiple Content-Length headers with differing values, forwarding all duplicate headers to the backend while using the first value to determine how many request body bytes to consume. Remote attackers can desynchronize the proxy and backend parser state, allowing injection of arbitrary HTTP requests to the backend to enable cache poisoning, access control bypass, and request hijacking.
DEBIAN-CVE-2026-54388
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-54388
tinyproxy
Source reference: /affected/0/package/name
- Affected versions
- 1.11.2-1
Source reference:
/affected/0/versions1.11.3-1Source reference:
/affected/0/versions1.11.3-1~bpo13+1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tinyproxy",
"purl": "pkg:deb/debian/tinyproxy?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.11.2-1",
"1.11.3-1",
"1.11.3-1~bpo13+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54388.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57811 · Revision 1
- Added to Heist Feed
- Publisher date