CVE-2026-107886
mediumOpenPrinting CUPS before 2.4.20 contains a double-free in printer-class management.
Vendor / product: Openprinting — cups
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.
CVSS
6.5
6.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-10-09 04:18
Modified: 2026-10-20 20:56
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-10-27 06:58 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
openprinting / cups ≥1.4.8 <2.4.20
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22
Patch / mitigation: https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22
References
- https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22 cve@mitre.org
- https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:58 UTC · record ↗