Vulnerability · Published Aug 14, 2026 · Assigned by Go
CVE-2026-46603Excessive memory allocation during VP8L decoding in golang.org/x/image
High 7.5
In plain English
A high-severity security flaw in golang.org/x/image/vp8l from golang.org/x/image. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 64.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | golang-golang-x-image | no fix listed | DEBIAN-CVE-2026-46603 |
| Debian:13 | golang-golang-x-image | no fix listed | DEBIAN-CVE-2026-46603 |
| Debian:14 | golang-golang-x-image | 0.45.0-1 | DEBIAN-CVE-2026-46603 |
| Go | golang.org/x/image | 0.45.0 | GO-2026-6222 |
| Ubuntu:22.04:LTS | golang-golang-x-image | no fix listed | UBUNTU-CVE-2026-46603 |
| Ubuntu:24.04:LTS | golang-golang-x-image | no fix listed | UBUNTU-CVE-2026-46603 |
| Ubuntu:26.04:LTS | golang-golang-x-image | no fix listed | UBUNTU-CVE-2026-46603 |
| Ubuntu:26.10 | golang-golang-x-image | no fix listed | UBUNTU-CVE-2026-46603 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| golang.org/x/image | golang.org/x/image/vp8l | 0 – before 0.45.0 |
Weakness: CWE-789 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H