CVE-2026-42500
Description
A flaw was found in golang.org/x/image/bmp. A remote attacker could exploit this vulnerability by providing a specially crafted paletted BMP (Bitmap) file. Decoding this file with an out-of-range palette index causes the application to panic when accessing invalid image pixels, leading to a Denial of Service (DoS). This could make the affected application unavailable to legitimate users.
Statement
A flaw was found in golang.org/x/image/bmp. Decoding a specially crafted paletted BMP file with an out-of-range palette index causes an unrecoverable panic, resulting in denial of service. The vulnerable code is registered automatically via init() when the bmp package is imported. Versions of golang.org/x/image prior to v0.40.0 are affected.
Mitigation
No mitigation is available for this vulnerability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 6.5 | N/A | 5.3 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | Required | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | None | N/A | None |
| Availability Impact | High | N/A | Low |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Understanding the Weakness (CWE)
Other
Technical Impact: Varies by Context
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