CVE-2026-42500: Golang.org/x/image Golang.org/x/image/bmp

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

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

Affected products

• Golang.org/x/image Golang.org/x/image/bmp: before 0.41.0 (fixed in 0.41.0)

Published 2026-05-29. Last modified 2026-07-22.