What is CVE-2026-46603?

CVE-2026-46603 is a high-severity vulnerability in Golang.org/x/image Golang.org/x/image/vp8l, classified under CWE-789. CVSS score: 7.5/10. Published 2026-08-14.

How severe is CVE-2026-46603?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Golang.org/x/image Golang.org/x/image/vp8l

CVE-2026-46603

VP8L decoding in golang.org/x/image/vp8l can allocate an excessive amount of memory when processing a crafted VP8L image containing many unused Huffman tree groups. This allows a remote attacker to cause a denial of service via memory exhaustion.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Golang.org/x/image Golang.org/x/image/vp8l — versions 0

Weakness classification (CWE)

CWE-789

References

security@golang.org
security@golang.org
security@golang.org

Frequently asked questions

What is CVE-2026-46603?: CVE-2026-46603 is a high-severity vulnerability in Golang.org/x/image Golang.org/x/image/vp8l, classified under CWE-789. CVSS score: 7.5/10. Published 2026-08-14.
How severe is CVE-2026-46603?: High severity. CVSS v3 base score is 7.5 out of 10.