DEBIAN-CVE-2026-31842
Tinyproxy through 1.11.3 is vulnerable to HTTP request parsing desynchronization due to a case-sensitive comparison of the Transfer-Encoding header in src/reqs.c. The is_chunked_transfer function uses strcmp to compare the header value against "chunked", even though RFC 7230 specifies that transfer-coding names are case-insensitive.
DEBIAN-CVE-2026-31842
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-2026-31842
tinyproxy
Source reference: /affected/0/package/name
- Affected versions
- 1.11.1-2.1
Source reference:
/affected/0/versions1.11.1-2.1+deb12u1Source reference:
/affected/0/versions1.11.1-3Source reference:
/affected/0/versions1.11.1-4Source reference:
/affected/0/versions1.11.2-1Source reference:
/affected/0/versions1.11.2-1~bpo12+1Source 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
tinyproxy
Source reference: /affected/1/package/name
- Affected versions
- 1.11.2-1
Source reference:
/affected/1/versions1.11.3-1Source reference:
/affected/1/versions1.11.3-1~bpo13+1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
tinyproxy
Source reference: /affected/2/package/name
- Affected versions
- 1.11.2-1
Source reference:
/affected/2/versions1.11.3-1Source reference:
/affected/2/versions1.11.3-1~bpo13+1Source reference:
/affected/2/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=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.11.1-2.1",
"1.11.1-2.1+deb12u1",
"1.11.1-3",
"1.11.1-4",
"1.11.2-1",
"1.11.2-1~bpo12+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-2026-31842.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tinyproxy",
"purl": "pkg:deb/debian/tinyproxy?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"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-2026-31842.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"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-2026-31842.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56750 · Revision 1
- Added to Heist Feed
- Publisher date