CVE-2026-5186CWE-119CWE-415

Nothings stb Multi-frame GIF File stb_image.h stbi__load_gif_main double free

Medium · published March 31, 2026

CVSS v4.0
4.8
EPSS
0%
Percentile
4.4
In the wild
Unconfirmed
What it is

A weakness has been identified in Nothings stb up to 2.30. This impacts the function stbi__load_gif_main of the file stb_image.h of the component Multi-frame GIF File Handler. This manipulation causes double free. The attack requires local access. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

The record
Technical detail
CVSS v4.0
4.8 · MEDIUM
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00156 · 4.4th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-415 · Double Free
Published
2026-03-31T07:30Z
EPSS history
Timeline
  • 31 MAR 07:30Z
    Nothings stb Multi-frame GIF File stb_image.h stbi__load_gif_main double free
    cvelistv5