What is CVE-2026-33019?

CVE-2026-33019 is a high-severity vulnerability in Saitoha Libsixel, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2026-04-14.

How severe is CVE-2026-33019?

High severity. CVSS v3 base score is 7.1 out of 10.

Out-of-bounds Read in Saitoha Libsixel

CVE-2026-33019

libsixel is a SIXEL encoder/decoder implementation derived from kmiya's sixel. Versions 1.8.7 and prior contain an integer overflow leading to an out-of-bounds heap read in the --crop option handling of img2sixel, where positive coordinate…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (0.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H.

Affected products

Saitoha Libsixel — versions < 1.8.7-r1

Weakness classification (CWE)

References

https://github.com/saitoha/libsixel/security/advisories/GHSA-c854-ffg9-g72c (x_refsource_CONFIRM)
https://github.com/saitoha/libsixel/releases/tag/v1.8.7-r1 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33019?: CVE-2026-33019 is a high-severity vulnerability in Saitoha Libsixel, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2026-04-14.
How severe is CVE-2026-33019?: High severity. CVSS v3 base score is 7.1 out of 10.