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CVE-2026-33809

OOM from malicious IFD offset in golang.org/x/image/tiff

MEDIUM
5.3
CVSS Score
Published: March 25, 2026 at 06:24 PM UTC
Updated: June 17, 2026 at 10:38 AM UTC
2 products affected across 2 vendorsTiffTiff

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Tiff· Golanggo
95%
v < 0.38.0
Tiff· Golang Org X Imagego
60%
v < 0.38.0
Affected range stops below 0.38.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Mailing List
Source: cverecord
https://go.dev/cl/757660
Issue Tracking
Source: cverecord
https://go.dev/issue/78267
Vendor Advisory
Source: cverecord
https://pkg.go.dev/vuln/GO-2026-4815

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-434

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