CVE-2026-87933

A vulnerability was found in DaveGamble cJSON up to 1.7.19. The affected element is the function cJSONUtils_MergePatch of the file cJSON_Utils.c. The manipulation results in use after free. The attack may be launched remotely. The exploit has been made public and could be used. The pull request to fix this issue awaits acceptance.

  • Published Sep 10, 2026
  • CVSS 5.5 medium
  • 0.5% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-87933 at the National Vulnerability Database