CVE-2026-102805: Integer Overflow (CVSS 6.5)

Description

A flaw has been found in Nothings stb up to 1.16. This 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. Executing a manipulation can lead to integer overflow. The attack can be executed remotely. The exploit has been published and may be used.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

EPSS — Exploit Prediction

0.0035

Probability of exploitation

0.26%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-189 CWE-189

CWE-190 Integer Overflow

References

Other References

https://github.com/nothings/stb/ https://github.com/nothings/stb/issues/1964 https://github.com/nothings/stb/issues/1964#issuecomment-5404606996 https://vuldb.com/cve/CVE-2026-102805 https://vuldb.com/submit/944868 https://vuldb.com/vuln/411497 https://vuldb.com/vuln/411497/cti

Frequently Asked Questions

What is CVE-2026-102805? +

A flaw has been found in Nothings stb up to 1.16. This 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. Executing a manipulation can lead to integer overflow. The attack can be executed remotely. The exploit has been published and may be used. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-102805? +

CVE-2026-102805 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0035, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-102805? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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