Summaryinfo

A vulnerability described as critical has been identified in Nothings stb up to 2.30. Affected is the function stbi__load_gif_main of the file stb_image.h of the component Multi-frame GIF File Handler. Such manipulation leads to double free. This vulnerability is traded as CVE-2026-5186. An attack has to be approached locally. Furthermore, there is an exploit available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in Nothings stb up to 2.30 and classified as critical. Affected by this issue is the function stbi__load_gif_main of the file stb_image.h of the component Multi-frame GIF File Handler. The manipulation with an unknown input leads to a double free vulnerability. Using CWE to declare the problem leads to CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. Impacted is confidentiality, integrity, and availability.

This vulnerability is handled as CVE-2026-5186. The exploitation is known to be easy. Local access is required to approach this attack. Technical details as well as a public exploit are known.

It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-17340). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Nothings

Name

• stb

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.25
• 2.26
• 2.27
• 2.28
• 2.29
• 2.30

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Submitinfo

Accepted

• Submit #780395: nothings stb stb_image.h <= 2.30 Double Free (by d0razi)

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