CVE-2026-107886
A client authorized to modify and delete classes can cause scheduler-wide denial of service.
Does this matter?
Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
- EPSS
- 0.24% probability · 15th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-415
- Affected
- openprinting/cups
- Source
- cve@mitre.org
EPSS moved from 0.1% on 9 October 2026 to 0.2% on 26 October 2026.
References
- https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22Exploit, Patch, Vendor Advisory
- https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22Exploit, Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.