CVE-2026-4296

216.73.217.22

· Published 21/04/2026 23:16 · Modified 22/04/2026 21:23

Labels: CVE-2026-4296 2026-04-21 CVE-2026-4296 CWE-185 [email protected]

Essential information

Published: 21/04/2026 23:16
Modified: 22/04/2026 21:23
Author: —
Creator: —
CVSS: 7.5 HIGH (v3) 7.5 HIGH (v4.0)
CISA KEV: No
CWE: —
CVSS vector: —

CVSS metrics

Description

An incorrect regular expression vulnerability was identified in GitHub Enterprise Server that allowed an attacker to bypass OAuth redirect URI validation. An attacker with knowledge of a first-party OAuth application's registered callback URL could craft a malicious authorization link that, when clicked by a victim, would redirect the OAuth authorization code to an attacker-controlled domain. This could allow the attacker to gain unauthorized access to the victim's account with the scopes granted to the OAuth application. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.1, 3.19.5, 3.18.8, 3.17.14, 3.16.17, 3.15.21, 3.14.26. This vulnerability was reported via the GitHub Bug Bounty program.

NVD status

Status: Awaiting Analysis — CVE has been recently published to the CVE List and has been received by the NVD.
Source: [email protected]
NVD: View on NVD

Affected products (CPE)

Product	CPE
github / github enterprise server	`cpe:2.3:a:github:github_enterprise_server:<3.21:::::::*`