A server-side request forgery (SSRF) vulnerability was identified in the GitHub Enterprise Server notebook viewer that allowed an attacker to access internal services by exploiting URL parser confusion between the validation layer and the HTTP request library. The hostname validation used a different URL parser than the request library, enabling a crafted URL to pass validation while directing the request to an unintended host. Exploitation required network access to the GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.16.18, 3.17.15, 3.18.9, 3.19.6, and 3.20.2. This vulnerability was reported via the GitHub Bug Bounty program.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.16.18CPE matchmatch criteria | cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* | ||
>= 3.17.0, < 3.17.15CPE matchmatch criteria | cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* | ||
>= 3.18.0, < 3.18.9CPE matchmatch criteria | cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* | ||
>= 3.19.0, < 3.19.6CPE matchmatch criteria | cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* | ||
>= 3.20.0, < 3.20.2CPE matchmatch criteria | 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:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/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, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.