What’s Vulnerable › Vulnerabilities

CVE-2026-33809: OOM from malicious IFD offset in golang.org/x/image/tiff

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-25 · updated 2026-06-17
• Weakness: CWE-434

Description

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.

Affected products

• golang.org/x/image/tiff: before 0.38.0 — fixed in 0.38.0

How to fix

Upgrade to a fixed version: golang.org/x/image/tiff 0.38.0. Check the vendor advisory for mitigations.

References

• https://go.dev/cl/757660
• https://go.dev/issue/78267
• https://pkg.go.dev/vuln/GO-2026-4815

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