# CVE-2026-123747: pappl-retrofit directory traversal in PPD file handling

Source: https://junglewise.ai/threats/cve-2026-123747-a-flaw-was-found-in-pappl-retrofit-the-application-fails-to  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-11. Updated: 2026-11-11  
License: CC BY 4.0 with a link back

CVE-2026-123747 · Severity: high · CVSS 7.3 · Published 2026-11-11

pappl-retrofit is a printer application library that processes PostScript Printer Description (PPD) files. An unauthenticated attacker can exploit a directory traversal vulnerability by uploading or deleting files with specially crafted filenames, potentially corrupting data, disrupting printer services, or executing arbitrary commands on the system.

Vendors: [OpenPrinting](https://junglewise.ai/threats/vendors/openprinting).

## Quick answers

**Is CVE-2026-123747 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-123747 being exploited in the wild.

**How severe is CVE-2026-123747?** High severity, with a CVSS score of 7.3, published 11 November 2026.

**Which products and versions are affected?** OpenPrinting pappl-retrofit.

**Is there a fix for CVE-2026-123747?** 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-2026-123747 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-123747?** Check whether you run OpenPrinting Pappl-Retrofit. 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

The vulnerability is a directory traversal flaw in PPD file upload and deletion functionality caused by insufficient filename sanitization. An unauthenticated remote attacker can submit filenames containing path traversal sequences (e.g., ../) to read, write, or delete arbitrary files on the system, leading to data corruption, denial of service, or remote code execution.

## Affected products

- OpenPrinting pappl-retrofit

## Timeline

- 2026-11-11: disclosed

## References

- [https://github.com/OpenPrinting/pappl-retrofit](https://github.com/OpenPrinting/pappl-retrofit)
- [https://access.redhat.com/downloads/content/package-browser/](https://access.redhat.com/downloads/content/package-browser/)