CVE-2026-104066

Scribus before 1.6.7 Heap Buffer Overflow via PICT 4-bit Pixel Unpacking

State: Published
Severity: 8.5 High
Published: Oct 30, 2026
Updated: Oct 30, 2026
Reserved: Oct 1, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	8.5 High	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	VulnCheck
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	VulnCheck

Weaknesses

CWE-787 Out-of-bounds Write

Affected Products

Product	Versions
ScribusScribus	before 1.6.7Affected

References

Patch Commitpatch
https://github.com/scribusproject/scribusproduct
https://wiki.scribus.net/canvas/1.6.7_Releaserelease-notes
VulnCheck Advisory: Scribus before 1.6.7 Heap Buffer Overflow via PICT 4-bit Pixel Unpackingthird-party-advisory

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