{"id":"CVE-2026-107886","title":"OpenPrinting CUPS before 2.4.20 contains a double-free in printer-class management","summary":"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 validat…","severity":"low","cvss":2.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-415"],"published":"2026-10-09","updated":"2026-10-09","sourceUpdated":"2026-10-09T04:18:05.163","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-107886","references":[{"url":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22","label":"cve@mitre.org"}],"tags":["nvd"],"ingestedAt":"2026-10-09T04:24:19.132Z","slug":"CVE-2026-107886","body":"## Overview\n\nOpenPrinting 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":13,"depthScoreParts":{"impact":12.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}