PAPPL Job Processing Heap-based Buffer Overflow Remote Code Execution Vulnerability

September 10th, 2026
ZDI-26-656 ZDI-CAN-32307

CVE ID

CVSS Score

9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors

PAPPL

Affected Products

PAPPL

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of PAPPL. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the parsing of raster documents. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account.

Additional Details

PAPPL has issued an update to correct this vulnerability. More details can be found at:
https://github.com/michaelrsweet/pappl/security/advisories/GHSA-p9wg-4p56-7xp6

Disclosure Timeline

  • 2026-08-04 - Vulnerability reported to vendor
  • 2026-09-10 - Coordinated public release of advisory
  • 2026-09-10 - Advisory Updated

Credit

Anonymous

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