---
id: CVE-2020-25912
title: >-
  A XML External Entity (XXE) vulnerability was discovered in
  symphony\lib\toolkit\class.xmlelement.php in Symphony 2.7.10 which can lead to
  an information disclosure or denial of service (DOS).
summary: >-
  A XML External Entity (XXE) vulnerability was discovered in
  symphony\lib\toolkit\class.xmlelement.php in Symphony 2.7.10 which can lead to
  an information disclosure or denial of service (DOS).
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H'
cwe:
  - CWE-611
vendor: getsymphony
product: symphony
affected:
  - symphony = 2.7.10
published: '2021-10-31'
updated: '2026-07-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-25912'
references:
  - url: 'https://github.com/symphonycms/symphonycms/issues/2924'
    label: cve@mitre.org
  - url: 'http://symphony.com'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://github.com/symphonycms/symphonycms/issues/2924'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.01396
epssPercentile: 0.71221
ingestedAt: '2026-07-06T17:03:23.599Z'
---

## Overview

A XML External Entity (XXE) vulnerability was discovered in symphony\lib\toolkit\class.xmlelement.php in Symphony 2.7.10 which can lead to an information disclosure or denial of service (DOS).

## Affected

- `symphony = 2.7.10`

## Remediation

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