---
id: CVE-2026-22190
title: >-
  The egg-mkfont utility in Panda3D versions up to and including 1.10.16
  contains an uncontrolled format string vulnerability
summary: >-
  The egg-mkfont utility in Panda3D versions up to and including 1.10.16
  contains an uncontrolled format string vulnerability. The -gp (glyph pattern)
  command-line option is used directly as the format string for sprintf() with
  only a sing…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-134
vendor: cmu
product: panda3d
affected:
  - panda3d <= 1.10.16
published: '2026-01-07'
updated: '2026-07-14'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-22190'
references:
  - url: 'https://github.com/panda3d/panda3d'
    label: disclosure@vulncheck.com
  - url: 'https://seclists.org/fulldisclosure/2026/Jan/11'
    label: disclosure@vulncheck.com
  - url: 'https://www.panda3d.org/'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/panda3d-egg-mkfont-format-string-information-disclosure
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00362
epssPercentile: 0.27266
ingestedAt: '2026-07-15T13:44:03.842Z'
---

## Overview

The egg-mkfont utility in Panda3D versions up to and including 1.10.16 contains an uncontrolled format string vulnerability. The -gp (glyph pattern) command-line option is used directly as the format string for sprintf() with only a single argument supplied. If an attacker provides additional format specifiers, egg-mkfont may read unintended stack values and write the formatted output into generated .egg and .png files, resulting in disclosure of stack-resident memory and pointer values.

## Affected

- `panda3d <= 1.10.16`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.