High severity · published Jun 25, 2026
CVE-2026-46601
Panic on VP8 alpha channel size mismatch in x/image/webp in golang.org/x/image
7.5
CVSS
0.6%
EPSS
No
On KEV
Description
The webp decoder can panic when processing a VP8 chunk with dimensions that do not match the canvas size.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GO
golang.org/x/image/webp · golang.org/x/image
before 0.43.0; before 0.43.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46601
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-46601
go.dev
https://go.dev/cl/787681
go.dev
https://go.dev/issue/79869
pkg.go.dev
https://pkg.go.dev/vuln/GO-2026-5061
More from golang.org/x/image/webp
7.5
CVE-2026-33813
Panic when decoding large WEBP image on 32-bit platforms in golang.org/x/image