CVE Tools
Sign in

CVE-2026-3854

Remote code execution via git push option injection in GitHub Enterprise Server

Published: Mar 10, 2026Updated: Apr 28, 2026 Sources: CVE List NVD BDUCWE-77
NVD MITRE
8.8CVSSHIGH
EPSS Score
9.9%
Top 5.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 3.14.25, 3.15.20, 3.16.16, 3.17.13, 3.18.7 and 3.19.4.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-77

Affected Products

GitHub Enterprise ServerGitHub Inc
SaaS
DevTools & CI / source-control
Enterprise ServerGitHubDevTools & CI
enterprise servergithubDevTools & CI
github inccommercialUSDevTools & CIaka github
githubcommercialUSDevTools & CIaka github

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Execution
View detailed technique mapping

References

https://github.blog/security/securing-the-git-push-pipeline-responding-to-a-critical-remote-code-execution-vulnerability/
github.blog
https://docs.github.com/en/
docs.github.com
https://www.wiz.io/blog/github-rce-vulnerability-cve-2026-3854
wiz.io
and 6 more references View all →

Timeline

Published
Mar 10, 2026
Last Updated
Apr 28, 2026
News mentions
1

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-3854 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows