CVE-2026-34979 Details
Description
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.
A heap-based buffer overflow vulnerability has been identified in OpenPrinting CUPS versions through 2.4.16. The issue arises in the CUPS scheduler when constructing filter option strings from job attributes. The vulnerability allows an attacker who can submit IPP jobs to exploit memory corruption in the CUPS daemon by creating maliciously large 'job-uuid' or 'job-authorization-uri' attributes. This exploitation can lead to a crash of the CUPS daemon, causing a denial-of-service condition, and may potentially be leveraged for arbitrary code execution.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 7, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/OpenPrinting/cups/security/advisories/GHSA-6qxf-7jx6-86fh | CISA-ADP | ExploitVendor Advisory |
| https://github.com/OpenPrinting/cups/security/advisories/GHSA-6qxf-7jx6-86fh | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-122 | Heap-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| openprinting cups | <= 2.4.16 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 16, 2026 | Initial Analysis | [email protected] |
| Apr 7, 2026 | CVE Modified | CISA-ADP |
| Apr 3, 2026 | New CVE Received | [email protected] |