DEBIAN-CVE-2026-32240
Cap'n Proto is a data interchange format and capability-based RPC system. Prior to 1.4.0, when using Transfer-Encoding: chunked, if a chunk's size parsed to a value of 2^64 or larger, it would be truncated to a 64-bit integer. In theory, this bug could enable HTTP request/response smuggling. This vulnerability is fixed in 1.4.0.
DEBIAN-CVE-2026-32240
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-2026-32240
capnproto
Source reference: /affected/0/package/name
- Affected versions
- 0.9.2-2
Source reference:
/affected/0/versions0.9.2-3Source reference:
/affected/0/versions0.9.2-4Source reference:
/affected/0/versions1.0.1-1Source reference:
/affected/0/versions1.0.1-2Source reference:
/affected/0/versions1.0.1-3Source reference:
/affected/0/versions1.0.1-4Source reference:
/affected/0/versions1.1.0-1Source reference:
/affected/0/versions1.1.0-2Source reference:
/affected/0/versions1.1.0-2.1Source reference:
/affected/0/versions1.4.0-1Source reference:
/affected/0/versions1.4.0-2Source reference:
/affected/0/versions1.4.0-3Source reference:
/affected/0/versions1.5.0-1Source reference:
/affected/0/versions1.5.0-2Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
capnproto
Source reference: /affected/1/package/name
- Affected versions
- 1.1.0-2
Source reference:
/affected/1/versions1.1.0-2.1Source reference:
/affected/1/versions1.4.0-1Source reference:
/affected/1/versions1.4.0-2Source reference:
/affected/1/versions1.4.0-3Source reference:
/affected/1/versions1.5.0-1Source reference:
/affected/1/versions1.5.0-2Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
capnproto
Source reference: /affected/2/package/name
- Affected versions
- 1.1.0-2
Source reference:
/affected/2/versions1.1.0-2.1Source reference:
/affected/2/versions1.4.0-1Source reference:
/affected/2/versions - Fixed versions
- 1.4.0-2
Source reference:
/affected/2/ranges - 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": "capnproto",
"purl": "pkg:deb/debian/capnproto?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"0.9.2-2",
"0.9.2-3",
"0.9.2-4",
"1.0.1-1",
"1.0.1-2",
"1.0.1-3",
"1.0.1-4",
"1.1.0-1",
"1.1.0-2",
"1.1.0-2.1",
"1.4.0-1",
"1.4.0-2",
"1.4.0-3",
"1.5.0-1",
"1.5.0-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-32240.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "capnproto",
"purl": "pkg:deb/debian/capnproto?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.1.0-2",
"1.1.0-2.1",
"1.4.0-1",
"1.4.0-2",
"1.4.0-3",
"1.5.0-1",
"1.5.0-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-32240.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.4.0-2"
}
]
}
],
"package": {
"name": "capnproto",
"purl": "pkg:deb/debian/capnproto?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.1.0-2",
"1.1.0-2.1",
"1.4.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-32240.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56825 · Revision 1
- Added to Heist Feed
- Publisher date