CVE-2026-107886
mediumpriority · track · 26EPSS 0.002 · 15 %ileDEUSEPSS · scored 2026-10-27
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.3–6.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-3742CUPS: Schwachstelle ermöglicht Denial of ServiceDeutsch2026-10-05csaf · cert_bundDE
Ein lokaler Angreifer kann eine Schwachstelle in CUPS ausnutzen, um einen Denial of Service Angriff durchzuführen.
sources
Which sources assert this record, and when.
references (1) nvd
External citations — patches, advisories, analysis.
- https://github.com/OpenPrinting/cups/security/advisories/GHSA-pwg4-pv39-8c22ExploitPatchVendor Advisory
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