CVE-2026-123747 Pappl-retrofit: directory traversal in the add-ppdfiles and delete-ppdfiles actions
Unauthenticated remote attackers can upload or delete arbitrary files via traversal in PPD filenames, possibly executing commands; pappl-retrofit operators should care.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Harmful if only installed
- No
- Needs a specific call
- No
- Fix
- None listed
What is CVE-2026-123747?
CVE-2026-123747 is a high-severity path traversal vulnerability in OpenPrinting Red Hat Enterprise Linux 10, published on 11 Nov 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
A flaw was found in pappl-retrofit. The application fails to properly sanitize user-supplied filenames when handling the upload and deletion of PostScript Printer Description (PPD) files. A remote, unauthenticated attacker can exploit this directory traversal flaw by submitting filenames containing path traversal sequences. This allows the attacker to upload or delete arbitrary files on the system, which can result in data corruption, denial of service, or arbitrary command execution.
Weakness: CWE-22
Which versions are affected by CVE-2026-123747?
An affected version is exposed as installed. No special setting or call is needed.
How do I fix CVE-2026-123747?
No fix has been published for CVE-2026-123747 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-123747 being exploited?
There is no known exploitation of CVE-2026-123747 in the wild and no public exploit code.
Sources
Also known as UBUNTU-CVE-2026-123747.