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5.3
CVE-2026-33809: Out-of-Memory Attack via Malicious TIFF File in golang.org/x/image/tiff
CVE-2026-33809 · published 7 months ago
Summary
A malicious TIFF file can cause excessive memory usage or crashes in software that uses the golang.org/x/image/tiff library, potentially leading to a denial-of-service. Affected software should update to the latest version to prevent this issue. Users should exercise caution when opening untrusted TIFF files.
What to do
- Update x golang.org/x/image to version 0.38.0.
- Update golang.org x to version 0.38.0.
- Update debian golang-golang-x-image to version 0.38.0-1.
- Update golang tiff to version 0.38.0 or later.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Go | x | golang.org/x/image |
< 0.38.0 Fix: upgrade to 0.38.0
|
| Debian:11 | debian | golang-golang-x-image | All versions |
| Debian:12 | debian | golang-golang-x-image | All versions |
| Debian:13 | debian | golang-golang-x-image | All versions |
| go | golang.org | x |
< 0.38.0 Fix: upgrade to 0.38.0
|
| Debian:14 | debian | golang-golang-x-image |
< 0.38.0-1 Fix: upgrade to 0.38.0-1
|
| – | golang | tiff |
< 0.38.0 cpe:2.3:a:golang:tiff:*:*:*:*:*:go:*:* |
| Ubuntu:18.04:LTS | canonical | golang-golang-x-image | All versions |
Original advisory text
Go Images vulnerable to an out-of-memory error via a crafted TIFF file
A maliciously crafted TIFF file can cause image decoding to attempt to allocate up 4GiB of memory, causing either excessive resource consumption or an out-of-memory error.
References
- https://go.dev/cl/757660 Mailing List
- https://go.dev/issue/78267 Issue Tracking
- https://security-tracker.debian.org/tracker/CVE-2026-33809 Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-33809
- https://github.com/advisories/GHSA-44p7-9xx4-hf2g
- https://ubuntu.com/security/CVE-2026-33809 Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2026-33809 Third Party Advisory
- https://github.com/golang/go/issues/78267 Third Party Advisory
- https://pkg.go.dev/vuln/GO-2026-4815 Vendor Advisory
Internet-facing
14 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically
- Gives an attacker partial control
Type
CWE-770Allocation of Resources Without Limits
CWE-434Unrestricted File Upload
Timeline
Published25 Mar 2026
Updated4 Nov 2026
First seen25 Mar 2026
Sources
DEBIAN-CVE-2026-33809 · OSV
GO-2026-4815 · OSV
CVE-2026-33809 · NVD
GHSA-44p7-9xx4-hf2g · GHSA
UBUNTU-CVE-2026-33809 · OSV
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