---
id: CVE-2023-50658
aliases:
  - GHSA-6294-6rgp-fr7r
  - GHSA-mhpq-9638-x6pw
  - GO-2023-2409
title: jose2go vulnerable to denial of service via large p2c value
summary: jose2go vulnerable to denial of service via large p2c value
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
vendor: dvsekhvalnov
product: github.com/dvsekhvalnov/jose2go
ecosystem: go
affected:
  - github.com/dvsekhvalnov/jose2go < 1.6.0
patched:
  - github.com/dvsekhvalnov/jose2go 1.6.0
published: '2024-02-29'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:50:05.399928431Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-6294-6rgp-fr7r'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2023-50658'
  - url: 'https://github.com/dvsekhvalnov/jose2go/issues/31'
  - url: >-
      https://github.com/dvsekhvalnov/jose2go/commit/a4584e9dd7128608fedbc67892eba9697f0d5317
  - url: 'https://github.com/dvsekhvalnov/jose2go'
  - url: 'https://github.com/dvsekhvalnov/jose2go/compare/v1.5.0...v1.6.0'
  - url: 'https://pkg.go.dev/vuln/GO-2023-2409'
  - url: >-
      https://www.blackhat.com/us-23/briefings/schedule/#three-new-attacks-against-json-web-tokens-31695
tags:
  - osv
  - go
epss: 0.00824
epssPercentile: 0.55512
ingestedAt: '2026-09-12T03:13:01.757Z'
---

## Overview

The jose2go component before 1.6.0 for Go allows attackers to cause a denial of service (CPU consumption) via a large p2c (aka PBES2 Count) value.

## Affected packages

- `github.com/dvsekhvalnov/jose2go < 1.6.0`

## Remediation

Upgrade to a patched release:

- `github.com/dvsekhvalnov/jose2go 1.6.0`