CVE WatchOct 20, 2026

CVE-2026-107886

OpenPrinting CUPS before 2.4.20 contains a double-free in printer-class management. When CUPS-Add-Modify-Class replaces an existing class me

CVSS

2.3

Low

EPSS

0.2%

p15

KEV

—

Exploit Today

0-100

Published: Oct 9, 2026 · Last modified: Oct 20, 2026 · CWE-415

EPSS · 30d

0.1%EPSS · 30 days0.2%

2026-10-092026-11-05

Technical 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.

Official references

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