CVE-2026-46599: Golang.org/x/image Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-q675-qj96-32m9
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CVSS 7.5
CWE-770
Published
Advisory Summary

CVE-2026-46599 is a HIGH (CVSS 7.5) remote code execution vulnerability (CWE-770: Allocation of Resources Without Limits or Throttling) affecting Golang.org/x/image libraries in the Go ecosystem. The issue involves golang.org/x/image/tiff has excessive resource consumption in packbits decompression. Remediation is available by upgrading affected packages to version 0.41.0.

CVE-2026-46599 at a Glance

CVE Identifier CVE-2026-46599
GHSA Identifier GHSA-q675-qj96-32m9
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-770: Allocation of Resources Without Limits or Throttling
Affected Product Golang.org/x/image
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-46599

To remediate this vulnerability, upgrade all affected Golang.org/x/image dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

golang.org/x/image fixed: 0.41.0 
Upgrade golang.org/x/image to 0.41.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for golang.org/x/image

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-46599, inspect your project dependencies for Golang.org/x/image:

inspect dependencies for golang.org/x/image

Analyze the terminal output to locate any version of Golang.org/x/image in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.41.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-770: Allocation of Resources Without Limits or Throttling, where the product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated. In Golang.org/x/image, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2026-46599 Affected Golang.org/x/image Versions

1 component(s)
Fixed Versions:
0.41.0
Product / Package Ecosystem Affected Versions Fixed Version
golang.org/x/image
golang/golang.org/x/image
Go
< 0.41.0
0.41.0

References

NVD — CVE-2026-46599 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46599
cs.opensource.google/go/x/image PACKAGE
https://cs.opensource.google/go/x/image
go.dev/cl/759960 WEB
https://go.dev/cl/759960
go.dev/issue/79577 WEB
https://go.dev/issue/79577
groups.google.com/g/golang-announce/c... WEB
https://groups.google.com/g/golang-announce/c/uhYX90BlBvI
pkg.go.dev/vuln/go-2026-5032 WEB
https://pkg.go.dev/vuln/GO-2026-5032

Frequently Asked Questions

What is CVE-2026-46599?
CVE-2026-46599 is a security vulnerability in Golang.org/x/image involving golang.org/x/image/tiff has excessive resource consumption in PackBits decompression under CWE-770: Allocation of Resources Without Limits or Throttling.
Which Golang.org/x/image versions are affected?
Affected versions include releases prior to 0.41.0 across affected packages: golang.org/x/image.
What version fixes CVE-2026-46599?
Upgrading to 0.41.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is golang.org/x/image affected?
Yes, golang.org/x/image is affected in releases prior to 0.41.0. Upgrade your dependency to 0.41.0 or later.
What is the CVSS score of CVE-2026-46599?
CVE-2026-46599 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-46599?
CVE-2026-46599 is classified under CWE-770: Allocation of Resources Without Limits or Throttling (The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.).
How can I check Go dependencies for CVE-2026-46599?
Run the dependency tree command: 'inspect dependencies for golang.org/x/image'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-q675-qj96-32m9",
  "modified" : "2026-07-02T21:01:22Z",
  "published" : "2026-07-02T21:01:22Z",
  "aliases" : [ "CVE-2026-46599" ],
  "summary" : "golang.org/x/image/tiff has excessive resource consumption in PackBits decompression",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "golang.org/x/image"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.41.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-46599"
  }, {
    "type" : "PACKAGE",
    "url" : "https://cs.opensource.google/go/x/image"
  }, {
    "type" : "WEB",
    "url" : "https://go.dev/cl/759960"
  }, {
    "type" : "WEB",
    "url" : "https://go.dev/issue/79577"
  }, {
    "type" : "WEB",
    "url" : "https://groups.google.com/g/golang-announce/c/uhYX90BlBvI"
  }, {
    "type" : "WEB",
    "url" : "https://pkg.go.dev/vuln/GO-2026-5032"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-770" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-02T21:01:22Z",
    "nvd_published_at" : "2026-05-29T20:16:28Z"
  }
}