CVE-2026-42500

Panic when reading out of bound palette index in golang.org/x/image/bmp

Medium · published May 29, 2026

CVSS v3.1
5.3
EPSS
1%
Percentile
43.6
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00524 · 43.6th percentile
Published
2026-05-29T18:36Z
EPSS history
Timeline
  • 29 MAY 18:36Z
    Panic when reading out of bound palette index in golang.org/x/image/bmp
    cvelistv5