CVE-2026-5186
Received Received - Intake
Double Free Vulnerability in stb_image.h Multi-frame GIF Handler

Publication date: 2026-03-31

Last updated on: 2026-04-29

Assigner: VulDB

Description
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.
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Meta Information
Published
2026-03-31
Last Modified
2026-04-29
Generated
2026-06-16
AI Q&A
2026-03-31
EPSS Evaluated
2026-06-15
NVD
CVE-2026-5186
EUVD
EUVD-2026-17340
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
nothings stb to 2.30 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
CWE-415 The product calls free() twice on the same memory address.
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Executive Summary

This vulnerability is a weakness in the Multi-frame GIF File Handler component of Nothings stb, specifically in the function stbi__load_gif_main within the file stb_image.h. It causes a double free error, which means that the program attempts to free the same memory twice. This can lead to undefined behavior, including crashes or potential exploitation.

The attack requires local access to the system, and the exploit code has been made publicly available.

Impact Analysis

This vulnerability can impact you by allowing an attacker with local access to cause a double free condition, which may lead to program crashes or potentially allow execution of arbitrary code. This could compromise the stability and security of the affected application or system.

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