GO-2026-6222: golang.org/x/image (CVE-2026-46603)

Excessive memory allocation during VP8L decoding in golang.org/x/image

CVSS 7.5 HighEPSS 0.0041 · 36th percentile

Published by OSV at 14 Aug 2026, 16:22 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
golang.org/x/image	Go	<0.45.0	0.45.0

Identifiers

GO-2026-6222 · CVE-2026-46603

Weakness (CWE)

CWE-789

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

golang.org/x/image versions before 0.45.0 can allocate an excessive amount of memory when decoding a crafted VP8L image that contains many unused Huffman tree groups. A remote attacker who supplies such an image can exhaust memory and cause a denial of service. Upgrade to golang.org/x/image 0.45.0 or later.

Written 6 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.5	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	ADP (CISA-ADP)

CISA KEV Not listed.
EPSS 0.0041, the 36th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:53 UTC First seen by agentprime
31 Oct 2026, 14:53 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.