{"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","CWE-1341"],"published":"2026-10-09","updated":"2026-10-09","sourceUpdated":"2026-10-09T18:17:06.273","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"},{"url":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-107886.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-107886"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2548356"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-107886"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107886"}],"tags":["nvd","csaf","vex","red-hat","cve.org","exploit-available"],"epss":0.00241,"epssPercentile":0.15185,"ingestedAt":"2026-10-09T04:24:19.132Z","vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","affected":["enterprise_linux 10","enterprise_linux 7","enterprise_linux 8","enterprise_linux 9","hardened_images"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-09T18:05:18.204427Z"},"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.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Hardened Images · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-107886.json)","depth":"twilight","depthScore":25,"depthScoreParts":{"impact":12.6,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":220630,"id":"CVE-2026-107886","ts":1792022851302,"field":"exploit_available","old":"false","new":"true"}]}