Summaryinfo

A vulnerability marked as critical has been reported in Nothings stb_image up to 2.30. This impacts the function stbi__gif_load_next of the file stb_image.h of the component Multi-frame GIF File Handler. This manipulation causes heap-based overflow. This vulnerability appears as CVE-2026-5185. The attack requires local access. In addition, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability has been found in Nothings stb_image up to 2.30 and classified as critical. Affected by this vulnerability is the function stbi__gif_load_next of the file stb_image.h of the component Multi-frame GIF File Handler. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability.

This vulnerability is known as CVE-2026-5185. The exploitation appears to be easy. An attack has to be approached locally. Technical details and also 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-2026-17337). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Nothings

Name

• stb_image

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 #780390: nothings stb stb_image.h <= 2.30 Heap-based Buffer Overflow (by d0razi)

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