What is CVE-2026-104066?

CVE-2026-104066 is a high-severity vulnerability, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-10-30.

How severe is CVE-2026-104066?

High severity. CVSS v3 base score is 7.8 out of 10.

CVE-2026-104066

CVE-2026-104066

Scribus before 1.6.7 contains a heap buffer overflow vulnerability in the Mac PICT image loader and import plugin when unpacking 4-bit indexed pixel data. Attackers can supply a crafted PICT file with inconsistent width and row data that, when placed or imported, writes out of bounds, causing crashes or code execution.

Vulnerability class: Buffer Overflow

Published 2026-10-30 · last modified 2026-10-30.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/scribusproject/scribus/commit/d667b3b1d38e1808721315dc976d67b72070f6… (patch)
github.com/scribusproject/scribus (product)
wiki.scribus.net/canvas/1.6.7_Release (release-notes)
www.vulncheck.com/advisories/scribus-before-1.6.7-heap-buffer-overflow-via-pict… (third-party-advisory)

Frequently asked questions

What is CVE-2026-104066?: CVE-2026-104066 is a high-severity vulnerability, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-10-30.
How severe is CVE-2026-104066?: High severity. CVSS v3 base score is 7.8 out of 10.