---
id: CVE-2024-24786
title: >-
  The protojson.Unmarshal function can enter an infinite loop when unmarshaling
  certain forms of invalid JSON
summary: >-
  The protojson.Unmarshal function can enter an infinite loop when unmarshaling
  certain forms of invalid JSON. This condition can occur when unmarshaling into
  a message which contains a google.protobuf.Any value, or when the
  UnmarshalOptio…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-1286
vendor: google.golang.org/protobuf
product: google.golang.org/protobuf/encoding/protojson
affected:
  - google.golang.org/protobuf/encoding/protojson < 1.33.0
  - google.golang.org/protobuf/internal/encoding/json < 1.33.0
published: '2024-03-05'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T14:17:06.307'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-24786'
references:
  - url: 'http://www.openwall.com/lists/oss-security/2024/03/08/4'
    label: security@golang.org
  - url: 'https://go.dev/cl/569356'
    label: security@golang.org
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JDMBHAVSDU2FBDZ45U3A2VLSM35OJ2HU/
    label: security@golang.org
  - url: 'https://pkg.go.dev/vuln/GO-2024-2611'
    label: security@golang.org
  - url: 'https://security.netapp.com/advisory/ntap-20240517-0002/'
    label: security@golang.org
  - url: 'http://www.openwall.com/lists/oss-security/2024/03/08/4'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://go.dev/cl/569356'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JDMBHAVSDU2FBDZ45U3A2VLSM35OJ2HU/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://pkg.go.dev/vuln/GO-2024-2611'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.netapp.com/advisory/ntap-20240517-0002/'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2024-11-07T16:22:27.828054Z'
epss: 0.01262
epssPercentile: 0.68379
ingestedAt: '2026-09-23T14:25:29.762Z'
---

## Overview

The protojson.Unmarshal function can enter an infinite loop when unmarshaling certain forms of invalid JSON. This condition can occur when unmarshaling into a message which contains a google.protobuf.Any value, or when the UnmarshalOptions.DiscardUnknown option is set.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.