← Vulnerability feed

Vulnerability record · CVE-2020-10519 · published 3 March 2021

CVE-2020-10519: Github command injection vulnerability

Github · Github

A remote code execution vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site. User-controlled configuration of the underlying parsers used by GitHub Pages were not sufficiently restricted and made it possible to execute commands on the GitHub Enterprise Server instance. To exploit this vulnerability, an attacker would need permission to create and build a GitHub Pages site on the GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 2.22.7 and was fixed in 2.22.7, 2.21.15, and 2.20.24. The underlying issues contributing to this vulnerability were identified through the GitHub Security Bug Bounty program.

8.8 CVSS 3.1 High EPSS 3.1% · top 12.8% CWE-77 · Command injection
8.8CVSS 3.1 base score, v2 6.5
3.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

A remote code execution vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site. User-controlled configuration of the underlying parsers used by GitHub Pages were not sufficiently restricted and made it possible to execute commands on the GitHub Enterprise Server instance. To exploit this vulnerability, an attacker would need permission to create and build a GitHub Pages site on the GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 2.22.7 and was fixed in 2.22.7, 2.21.15, and 2.20.24. The underlying issues contributing to this vulnerability were identified through the GitHub Security Bug Bounty program.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://docs.github.com/en/enterprise-server%402.20/admin/release-notes#2.20.24
https://docs.github.com/en/enterprise-server%402.21/admin/release-notes#2.21.15
https://docs.github.com/en/enterprise-server%402.22/admin/release-notes#2.22.7
https://docs.github.com/en/enterprise-server%402.20/admin/release-notes#2.20.24
https://docs.github.com/en/enterprise-server%402.21/admin/release-notes#2.21.15
https://docs.github.com/en/enterprise-server%402.22/admin/release-notes#2.22.7

Track CVE-2020-10519 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-10516Github improper authorization vulnerabilityAn improper access control vulnerability was identified in the GitHub Enterprise Server API that allowed an organization member to escalate permissio…EPSS 1.6%9.8CVE-2017-18365Github deserialization of untrusted data vulnerabilityThe Management Console in GitHub Enterprise 2.8.x before 2.8.7 has a deserialization issue that allows unauthenticated remote attackers to execute ar…EPSS 21%8.8CVE-2020-10518Github command injection vulnerabilityA remote code execution vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site. User-cont…EPSS 3.7%8.1CVE-2021-22863Github improper authorization vulnerabilityAn improper access control vulnerability was identified in the GitHub Enterprise Server GraphQL API that allowed authenticated users of the instance …EPSS 1.0%7.5CVE-2012-2055Github improper control of dynamically-managed code vulnerabilityGitHub Enterprise before 20120304 does not properly restrict the use of a hash to provide values for a model's attributes, which allows remote attack…EPSS 1.8%6.5CVE-2021-22861Github improper authorization vulnerabilityAn improper access control vulnerability was identified in GitHub Enterprise Server that allowed authenticated users of the instance to gain write ac…EPSS 0.95%6.5CVE-2021-22862Github improper authorization vulnerabilityAn improper access control vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user with the ability to fork a rep…EPSS 0.84%4.3CVE-2020-10517Github improper authorization vulnerabilityAn improper access control vulnerability was identified in GitHub Enterprise Server that allowed authenticated users of the instance to determine the…EPSS 1.1%

Source: NIST National Vulnerability Database (record CVE-2020-10519), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.