CVE-2026-42500

5.3 mediumEPSS 0.4%

Medium (5.3). EPSS 0.4% chance of exploitation in the next 30 days. Fixed in golang.org/x/image 0.41.0.

Decoding a paletted BMP file with an out-of-range palette index results in a panic when accessing pixels in the invalid image.

Severity

5.3 medium

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 32% of CVEs (scores of 2026-10-31)
Published: 2026-05-29
Modified: 2026-07-22
Record from: the NVD, synced 2026-10-19

Advisory	Ecosystem	Package	Affected	Fixed in
GO-2026-5031	Go	golang.org/x/image	<0.41.0	0.41.0