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 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.

Database specific

{
    "cna_assigner":  "mitre",
    "cwe_ids":  [
        "CWE-415"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107886.json"
}

References

Affected packages

Git / github.com/openprinting/cups

Affected ranges

Type

GIT

Repo

https://github.com/openprinting/cups

Events

Introduced

b7d698516c20e284279e090951f7e52c4d04885c

Fixed

ef80eeaea51430a055948240eea3f28ef5354edf

Database specific

Show details

{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "1.4.8"
                },
                {
                    "fixed":  "2.4.20"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        },
        {
            "cpe":  "cpe:2.3:a:openprinting:cups:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "1.4.8"
                },
                {
                    "fixed":  "2.4.20"
                }
            ],
            "source":  "CPE_RANGE"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107886.json"