CVE-2026-46602 Lack of limit on tile sizes in x/image/tiff in golang.org/x/image
A malicious TIFF image can cause unbounded memory consumption in the Go image library, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-46602?
CVE-2026-46602 is a high-severity denial of service vulnerability in golang.org/x/image/tiff, published on 25 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The TIFF decoder does not set a limit on the size of tiles in tiled images, permitting a malicious or corrupt image containing a very large tile to cause unbounded memory consumption.
Which versions are affected by CVE-2026-46602?
1 open source package ship an affected version, including golang.org/x/image.
| Package | Affected | Fixed in |
|---|---|---|
golang.org/x/image Go | All versions | 0.43.0 |
How do I fix CVE-2026-46602?
Upgrade golang.org/x/image to 0.43.0 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-46602 being exploited?
There is no known exploitation of CVE-2026-46602 in the wild and no public exploit code.
Sources
Also known as CLEANSTART-2026-BS64327, CLEANSTART-2026-RD95849, DEBIAN-CVE-2026-46602, GHSA-pwfv-328h-75x9, GO-2026-5062, MINI-3vrv-hj97-vwqh and 32 more.