CVE-2026-3854 is a high-severity vulnerability (CVSS 8.8) in GitHub Enterprise Server, allowing an attacker with push access to achieve remote code execution. This improper neutralization of special elements occurs when unsanitized user-supplied push option values are included in internal service headers during a git push operation. The attack has a network vector, low complexity, and requires low privileges, leading to high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion regarding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 3.14.0, <= 3.14.24CPE match | cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* | ||
>= 3.15.0, <= 3.15.19CPE match | cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* | ||
>= 3.16.0, <= 3.16.15CPE match | cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* | ||
>= 3.17.0, <= 3.17.12CPE match | cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* | ||
>= 3.18.0, <= 3.18.6CPE match | cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.