What’s Vulnerable › Vulnerabilities

CVE-2026-46601: Panic on VP8 alpha channel size mismatch in x/image/webp in golang.org/x/image

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-25 · updated 2026-10-25

Description

The webp decoder can panic when processing a VP8 chunk with dimensions that do not match the canvas size.

Affected products

• golang.org/x/image/webp: before 0.43.0 — fixed in 0.43.0

How to fix

Upgrade to a fixed version: golang.org/x/image/webp 0.43.0. Check the vendor advisory for mitigations.

References

• https://go.dev/cl/787681
• https://go.dev/issue/79869
• https://pkg.go.dev/vuln/GO-2026-5061

Get alerted when CVE-2026-46601 or the next vulnerability affects your stack