---
id: CVE-2021-45807
title: >-
  jpress v4.2.0 is vulnerable to command execution via
  io.jpress.web.admin._AddonController::doUploadAndInstall.
summary: >-
  jpress v4.2.0 is vulnerable to command execution via
  io.jpress.web.admin._AddonController::doUploadAndInstall.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
vendor: jpress
product: jpress
affected:
  - jpress = 4.2.0
published: '2022-01-13'
updated: '2026-07-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-45807'
references:
  - url: 'https://github.com/JPressProjects/jpress'
    label: cve@mitre.org
  - url: 'https://github.com/JPressProjects/jpress/issues/167'
    label: cve@mitre.org
  - url: 'http://jpress.com'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://github.com/JPressProjects/jpress'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://github.com/JPressProjects/jpress/issues/167'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.02118
epssPercentile: 0.8105
ingestedAt: '2026-07-06T17:03:23.849Z'
---

## Overview

jpress v4.2.0 is vulnerable to command execution via io.jpress.web.admin._AddonController::doUploadAndInstall.

## Affected

- `jpress = 4.2.0`

## Remediation

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