{"id":"CVE-2026-107886","state":"PUBLISHED","title":"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->pri","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.","publishedAt":"2026-10-09T04:00:29.308Z","updatedAt":"2026-10-09T18:05:33.937Z","severity":{"score":2.3,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L","source":"mitre"},"assigner":"mitre","products":["OpenPrinting CUPS"],"affected":[{"vendor":"OpenPrinting","product":"CUPS","defaultStatus":"unaffected","versions":[{"version":"1.4.8","status":"affected","lessThan":"2.4.20","versionType":"semver"}],"repo":"https://github.com/OpenPrinting/cups"}],"references":["https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22"],"weaknesses":["CWE-415"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/107xxx/CVE-2026-107886.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-107886","state":"PUBLISHED","datePublished":"2026-10-09T04:00:29.308Z","dateUpdated":"2026-10-09T18:05:33.937Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2026-10-09T04:00:28.517Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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":[{"vendor":"OpenPrinting","product":"CUPS","defaultStatus":"unaffected","versions":[{"version":"1.4.8","status":"affected","lessThan":"2.4.20","versionType":"semver"}],"repo":"https://github.com/OpenPrinting/cups"}],"references":[{"url":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"LOW","baseScore":2.3,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-415","description":"CWE-415: Double Free","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2026-10-09T04:00:29.308Z"},"x_generator":{"engine":"CVE-Request-form 0.0.1"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:*","versionStartIncluding":"1.4.8","versionEndExcluding":"2.4.20"}]}]}]},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-09T18:05:18.204427Z","id":"CVE-2026-107886","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-09T18:05:33.937Z"}}]}}}