DEBIAN-CVE-2026-27447
Record from OSV · Published April 3, 2026
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| cups | Debian:14 | 2.4.17-1 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | cups | 2.4.17-1, 2.4.16-1, 2.4.15-1 |
| Debian:12 | cups | 2.4.18-1, 2.4.2-3, 2.4.2-3+deb12u1 |
| Debian:14 | cups | 0, 2.4.16-1, 2.4.15-1 |
Timeline
- Apr 3, 2026 CVE Published
- Oct 1, 2026 CVE Updated
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln DEBIAN-CVE-2026-27447
vulnetix vdb fixes DEBIAN-CVE-2026-27447Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/DEBIAN-CVE-2026-27447/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart