CVE-2026-5186: medium-severity vulnerability in Nothings stb
Nothings stb Multi-frame GIF File stb_image.h stbi__load_gif_main double free
Published
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.8epss 0.1%
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.
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
Affected products
Nothings · stbRelated CVEs — Nothings stb
In the same product, most dangerous first.
CVE-2026-5314MEDIUMNothings stb TTF File stb_truetype.h stbtt_InitFont_internal out-of-boundsEPSS 0.7%CVE-2025-3406MEDIUMNothings stb Header Array stbhw_build_tileset_from_image out-of-boundsEPSS 0.6%CVE-2025-3409MEDIUMNothings stb stb_include_string stack-based overflowEPSS 0.5%CVE-2026-5315MEDIUMNothings stb TTF File stb_truetype.h stbtt__buf_get8 out-of-boundsEPSS 0.5%CVE-2025-3408MEDIUMNothings stb stb_dupreplace integer overflowEPSS 0.5%CVE-2025-3407MEDIUMNothings stb stbhw_build_tileset_from_image out-of-boundsEPSS 0.5%