CVE-2026-42500

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

29/05/2026

Last modified:

29/05/2026

Description

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

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS v3.1 Severity and Metrics:

Base Score: 5.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): Low

Base Score 3.x

5.30

Severity 3.x

MEDIUM

References to Advisories, Solutions, and Tools

https://go.dev/cl/781500
https://go.dev/issue/79576
https://groups.google.com/g/golang-announce/c/uhYX90BlBvI
https://pkg.go.dev/vuln/GO-2026-5031