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Vulnerability · Published Oct 9, 2026 · Assigned by mitre

CVE-2026-107886

Low 2.3

In plain English

A low-severity double free in CUPS from OpenPrinting. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)2.3Low
Exploit odds (30 days)0.2%top 84.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

OpenPrinting CUPS before 2.4.20 contains a double-free in printer-class management. When CUPS-Add-Modify-Class replaces an existing class member list, add_class() frees pclass->printers without clearing the pointer. If subsequent validation fails, the class retains the dangling pointer; CUPS-Delete-Class subsequently frees the same allocation in cupsdDeletePrinter(). A client authorized to modify and delete classes can cause scheduler-wide denial of service. The default policy requires @SYSTEM privileges.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12cupsno fix listedDEBIAN-CVE-2026-107886
Debian:13cupsno fix listedDEBIAN-CVE-2026-107886
Debian:14cupsno fix listedDEBIAN-CVE-2026-107886
Ubuntu:22.04:LTScupsno fix listedUBUNTU-CVE-2026-107886
Ubuntu:24.04:LTScupsno fix listedUBUNTU-CVE-2026-107886
Ubuntu:26.04:LTScupsno fix listedUBUNTU-CVE-2026-107886
Ubuntu:26.10cupsno fix listedUBUNTU-CVE-2026-107886

Affected products (as reported)

VendorProductVersions
OpenPrinting CUPS 1.4.8 – before 2.4.20

Weakness: CWE-415 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L

References