Bug 2453290 (CVE-2026-5185)

Summary: CVE-2026-5185 stb_image: Nothings stb_image: Heap-based buffer overflow in GIF file handler
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Nothings stb_image. A local attacker could exploit a heap-based buffer overflow vulnerability within the `stbi__gif_load_next` function of the Multi-frame GIF File Handler component. By manipulating a GIF file, this flaw could lead to information disclosure or denial of service (DoS).
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Description OSIDB Bzimport 2026-03-31 07:01:42 UTC 
A security flaw has been discovered in Nothings stb_image up to 2.30. This affects the function stbi__gif_load_next of the file stb_image.h of the component Multi-frame GIF File Handler. The manipulation results in heap-based buffer overflow. The attack requires a local approach. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.