CVE-2019-20056

MEDIUM

stb_image.h 2.23 - Reachable Assertion in stbi__shiftsigned

Title source: llm

stb_image.h (aka the stb image loader) 2.23, as used in libsixel and other products, has an assertion failure in stbi__shiftsigned.

Core 1

Core References

Exploit, Third Party Advisory x_refsource_misc

CVSS v3 6.5

EPSS 0.0094

EPSS Percentile 56.1%

Attack Vector NETWORK

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

CWE

CWE-617

Status published

Products (1)

nothings/stb_image.h 2.23

Published Dec 29, 2019

Tracked Since Feb 18, 2026