CVE-2026-46599

Excessive resource consumption in PackBits decompression in golang.org/x/image/tiff

HIGH
7.5
CVSS Score
Published: May 29, 2026 at 07:35 PM UTC
Updated: July 22, 2026 at 06:27 AM UTC
1 product affected across 1 vendorTiff

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Severity
HIGH7.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

The TIFF decoder does not place a limit on the size of PackBits-compressed data. A maliciously-crafted image can exploit this to cause a small image (both in terms of pixel width/height and encoded size) to make the decoder decode large amounts of compressed data.

Affected

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

v < 0.41.0
Affected range stops below 0.41.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

7.5HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-770

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