Nothings stb up to 1.16 Image Encoding stb_image_write.h integer overflow

Summaryinfo

A vulnerability identified as critical has been detected in Nothings stb up to 1.16. This impacts the function stbi_write_png_to_mem/stbi_write_jpg_core/stbi_write_tga_core in the library stb_image_write.h of the component Image Encoding. The manipulation leads to integer overflow. This vulnerability is uniquely identified as CVE-2026-102805. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in Nothings stb up to 1.16. It has been rated as critical. This issue affects the function stbi_write_png_to_mem/stbi_write_jpg_core/stbi_write_tga_core in the library stb_image_write.h of the component Image Encoding. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is integrity, and availability.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-102805. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept.

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Nothings

Name

• stb

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16

Website

• Product: https://github.com/nothings/stb/

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Accepted

• Submit #944868: nothings stb (stb_image_write.h) 31c1ad3 (latest at time of discovery) CWE-190: Integer Overflow; CWE-787: Out-of-bounds Write; CWE-125 (by JerryGW)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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