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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-3854 Detail

Description

An improper neutralization of special elements vulnerability was identified in GitHub Enterprise Server that allowed an attacker with push access to a repository to achieve remote code execution on the instance. During a git push operation, user-supplied push option values were not properly sanitized before being included in internal service headers. Because the internal header format used a delimiter character that could also appear in user input, an attacker could inject additional metadata fields through crafted push option values. This vulnerability was reported via the GitHub Bug Bounty program and has been fixed in GitHub Enterprise Server versions 3.14.24, 3.15.19, 3.16.15, 3.17.12, 3.18.6 and 3.19.3.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  GitHub, Inc. (Products Only)
CVSS-B 8.7 HIGH
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://docs.github.com/en/[email protected]/admin/release-notes#3.14.24 GitHub, Inc. (Products Only)
https://docs.github.com/en/[email protected]/admin/release-notes#3.15.19 GitHub, Inc. (Products Only)
https://docs.github.com/en/[email protected]/admin/release-notes#3.16.15 GitHub, Inc. (Products Only)
https://docs.github.com/en/[email protected]/admin/release-notes#3.17.12 GitHub, Inc. (Products Only)
https://docs.github.com/en/[email protected]/admin/release-notes#3.18.6 GitHub, Inc. (Products Only)
https://docs.github.com/en/[email protected]/admin/release-notes#3.19.3 GitHub, Inc. (Products Only)

Weakness Enumeration

CWE-ID CWE Name Source
CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection') GitHub, Inc. (Products Only)  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-3854
NVD Published Date:
03/10/2026
NVD Last Modified:
03/11/2026
Source:
GitHub, Inc. (Products Only)