Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 0.9%
CVSS Severity
CVSS v3 Score 2.3
References
Products affected by CVE-2026-107886
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cpe:2.3:a:openprinting:cups:1.4.8
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cpe:2.3:a:openprinting:cups:1.5.0
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cpe:2.3:a:openprinting:cups:1.5.1
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cpe:2.3:a:openprinting:cups:1.5.2
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cpe:2.3:a:openprinting:cups:1.5.3
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cpe:2.3:a:openprinting:cups:1.5.4
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cpe:2.3:a:openprinting:cups:1.6.0
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cpe:2.3:a:openprinting:cups:1.6.1
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cpe:2.3:a:openprinting:cups:1.6.2
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cpe:2.3:a:openprinting:cups:1.6.3
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cpe:2.3:a:openprinting:cups:1.6.4
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cpe:2.3:a:openprinting:cups:1.7.0
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cpe:2.3:a:openprinting:cups:1.7.1
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cpe:2.3:a:openprinting:cups:1.7.2
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cpe:2.3:a:openprinting:cups:1.7.3
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cpe:2.3:a:openprinting:cups:1.7.4
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cpe:2.3:a:openprinting:cups:1.7.5
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cpe:2.3:a:openprinting:cups:2.0.0
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cpe:2.3:a:openprinting:cups:2.0.1
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cpe:2.3:a:openprinting:cups:2.0.2
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cpe:2.3:a:openprinting:cups:2.0.3
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cpe:2.3:a:openprinting:cups:2.0.4
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cpe:2.3:a:openprinting:cups:2.1.0
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cpe:2.3:a:openprinting:cups:2.1.2
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cpe:2.3:a:openprinting:cups:2.1.3
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cpe:2.3:a:openprinting:cups:2.1.4
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cpe:2.3:a:openprinting:cups:2.2.0
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cpe:2.3:a:openprinting:cups:2.2.1
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cpe:2.3:a:openprinting:cups:2.2.10
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cpe:2.3:a:openprinting:cups:2.2.11
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cpe:2.3:a:openprinting:cups:2.2.12
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cpe:2.3:a:openprinting:cups:2.2.13
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cpe:2.3:a:openprinting:cups:2.2.2
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cpe:2.3:a:openprinting:cups:2.2.3
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cpe:2.3:a:openprinting:cups:2.2.4
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cpe:2.3:a:openprinting:cups:2.2.5
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cpe:2.3:a:openprinting:cups:2.2.6
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cpe:2.3:a:openprinting:cups:2.2.7
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cpe:2.3:a:openprinting:cups:2.2.8
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cpe:2.3:a:openprinting:cups:2.2.9
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cpe:2.3:a:openprinting:cups:2.3.0
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cpe:2.3:a:openprinting:cups:2.3.1
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cpe:2.3:a:openprinting:cups:2.3.3
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cpe:2.3:a:openprinting:cups:2.4.0
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cpe:2.3:a:openprinting:cups:2.4.1
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cpe:2.3:a:openprinting:cups:2.4.10
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cpe:2.3:a:openprinting:cups:2.4.11
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cpe:2.3:a:openprinting:cups:2.4.12
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cpe:2.3:a:openprinting:cups:2.4.13
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cpe:2.3:a:openprinting:cups:2.4.14
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cpe:2.3:a:openprinting:cups:2.4.15
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cpe:2.3:a:openprinting:cups:2.4.16
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cpe:2.3:a:openprinting:cups:2.4.17
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cpe:2.3:a:openprinting:cups:2.4.18
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cpe:2.3:a:openprinting:cups:2.4.2
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cpe:2.3:a:openprinting:cups:2.4.3
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cpe:2.3:a:openprinting:cups:2.4.4
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cpe:2.3:a:openprinting:cups:2.4.5
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cpe:2.3:a:openprinting:cups:2.4.6
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cpe:2.3:a:openprinting:cups:2.4.7
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cpe:2.3:a:openprinting:cups:2.4.8
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cpe:2.3:a:openprinting:cups:2.4.9