Quick answers
- Is CVE-2026-34980 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-34980 being exploited in the wild.
- How severe is CVE-2026-34980?
- High severity, with a CVSS score of 7.5, published 3 April 2026.
- Which products and versions are affected?
- OpenPrinting Cups <= 2.4.16.
- Is there a fix for CVE-2026-34980?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-34980 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-34980?
- Check whether you run OpenPrinting Cups at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A vulnerability in OpenPrinting CUPS (versions 2.4.16 and prior) allows an unauthenticated remote attacker to achieve code execution as the 'lp' user. The flaw exists in the cupsd scheduler when a shared PostScript queue is exposed. An attacker can send a Print-Job with a specially crafted 'page-border' value containing an embedded newline. When the server escapes and later reparses this value, it interprets the second line as a trusted 'PPD:' scheduler control record. By injecting a 'cupsFilter2' entry into the queue's PPD file, the attacker can force the server to execute an arbitrary binary during a subsequent raw print job. This can be chained with other vulnerabilities to escalate privileges to root.
Affected products
- OpenPrinting CUPS <= 2.4.16
Timeline
- 2026-03-31: advisory: Initial advisory published by OpenPrinting
- 2026-04-03: disclosed: CVE-2026-34980 assigned and published