DEBIAN-CVE-2026-34990
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a local unprivileged user can coerce cupsd into authenticating to an attacker-controlled localhost IPP service with a reusable Authorization: Local ... token. That token is enough to drive /admin/ requests on localhost, and the attacker can combine CUPS-Create-Local-Printer with printer-is-shared=true to persist a file:///... queue even though the normal FileDevice policy rejects such URIs. Printing to that queue gives an arbitrary root file overwrite; the PoC below uses that primitive to drop a sudoers fragment and demonstrate root command execution. At time of publication, there are no publicly available patches.
DEBIAN-CVE-2026-34990
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-2026-34990
cups
Source reference: /affected/0/package/name
- Affected versions
- 2.4.10-1
Source reference:
/affected/0/versions2.4.10-2Source reference:
/affected/0/versions2.4.10-3Source reference:
/affected/0/versions2.4.10-4Source reference:
/affected/0/versions2.4.14-1Source reference:
/affected/0/versions2.4.15-1Source reference:
/affected/0/versions2.4.16-1Source reference:
/affected/0/versions2.4.17-1Source reference:
/affected/0/versions2.4.18-1Source reference:
/affected/0/versions2.4.2-3Source reference:
/affected/0/versions2.4.2-3+deb12u1Source reference:
/affected/0/versions2.4.2-3+deb12u2Source reference:
/affected/0/versions2.4.2-3+deb12u3Source reference:
/affected/0/versions2.4.2-3+deb12u4Source reference:
/affected/0/versions2.4.2-3+deb12u5Source reference:
/affected/0/versions2.4.2-3+deb12u6Source reference:
/affected/0/versions2.4.2-3+deb12u7Source reference:
/affected/0/versions2.4.2-3+deb12u8Source reference:
/affected/0/versions2.4.2-3+deb12u9Source reference:
/affected/0/versions2.4.2-4Source reference:
/affected/0/versions2.4.2-5Source reference:
/affected/0/versions2.4.2-6Source reference:
/affected/0/versions2.4.7-1Source reference:
/affected/0/versions2.4.7-1.1Source reference:
/affected/0/versions2.4.7-1.2Source reference:
/affected/0/versions2.4.7-2Source reference:
/affected/0/versions2.4.7-3Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
cups
Source reference: /affected/1/package/name
- Affected versions
- 2.4.10-3
Source reference:
/affected/1/versions2.4.10-3+deb13u1Source reference:
/affected/1/versions2.4.10-3+deb13u2Source reference:
/affected/1/versions2.4.10-4Source reference:
/affected/1/versions2.4.14-1Source reference:
/affected/1/versions2.4.15-1Source reference:
/affected/1/versions2.4.16-1Source reference:
/affected/1/versions2.4.17-1Source reference:
/affected/1/versions2.4.18-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
cups
Source reference: /affected/2/package/name
- Affected versions
- 2.4.10-3
Source reference:
/affected/2/versions2.4.10-4Source reference:
/affected/2/versions2.4.14-1Source reference:
/affected/2/versions2.4.15-1Source reference:
/affected/2/versions2.4.16-1Source reference:
/affected/2/versions - Fixed versions
- 2.4.17-1
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": "cups",
"purl": "pkg:deb/debian/cups?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.4.10-1",
"2.4.10-2",
"2.4.10-3",
"2.4.10-4",
"2.4.14-1",
"2.4.15-1",
"2.4.16-1",
"2.4.17-1",
"2.4.18-1",
"2.4.2-3",
"2.4.2-3+deb12u1",
"2.4.2-3+deb12u2",
"2.4.2-3+deb12u3",
"2.4.2-3+deb12u4",
"2.4.2-3+deb12u5",
"2.4.2-3+deb12u6",
"2.4.2-3+deb12u7",
"2.4.2-3+deb12u8",
"2.4.2-3+deb12u9",
"2.4.2-4",
"2.4.2-5",
"2.4.2-6",
"2.4.7-1",
"2.4.7-1.1",
"2.4.7-1.2",
"2.4.7-2",
"2.4.7-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34990.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "cups",
"purl": "pkg:deb/debian/cups?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2.4.10-3",
"2.4.10-3+deb13u1",
"2.4.10-3+deb13u2",
"2.4.10-4",
"2.4.14-1",
"2.4.15-1",
"2.4.16-1",
"2.4.17-1",
"2.4.18-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34990.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.17-1"
}
]
}
],
"package": {
"name": "cups",
"purl": "pkg:deb/debian/cups?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.4.10-3",
"2.4.10-4",
"2.4.14-1",
"2.4.15-1",
"2.4.16-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34990.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #55977 · Revision 1
- Added to Heist Feed
- Publisher date