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stb_image.h (aka the stb image loader) 2.23, as used in...

Moderate severity Unreviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Apr 24, 2026

Package

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Affected versions

Unknown

Patched versions

Unknown

Description

stb_image.h (aka the stb image loader) 2.23, as used in libsixel and other products, has a heap-based buffer over-read in stbi__load_main.

References

Published by the National Vulnerability Database Dec 13, 2019
Published to the GitHub Advisory Database May 24, 2022
Last updated Apr 24, 2026

Severity

Moderate

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(59th percentile)

Weaknesses

Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer. Learn more on MITRE.

CVE ID

CVE-2019-19777

GHSA ID

GHSA-6rrw-8mq7-2wvv

Source code

No known source code

Dependabot alerts are not supported on this advisory because it does not have a package from a supported ecosystem with an affected and fixed version.

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