GitHub Enterprise Server fixes a high-severity vulnerability

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[TLP:CLEAR] GitHub Enterprise Server fixes a high-severity vulnerability

GitHub Enterprise Server versions 3.18.3, 3.17.9, 3.16.12, 3.15.16 and 3.14.21 fix a high-severity vulnerability [1].

GitHub Enterprise Server - XSS (CVE-2025-14046)

CVSS 8.6 (High)

Under certain conditions, an unauthenticated remote attacker can perform an XSS attack [1].

The vulnerability is present in product:

GitHub Enterprise Server; >=3.14.0, <3.14.21; >=3.15.0, <3.15.16; >=3.16.0, <3.16.12; >=3.17.0, <3.17.9; >=3.18.0, <3.18.3;

CVSS: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

More information:

CVE-2025-14046 at cve.org, NVD
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') at cwe.mitre.org

The vulnerability was publicly disclosed 11. 12. 2025.

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[TLP:CLEAR] GitHub Enterprise Server fixes a high-severity vulnerability

GitHub Enterprise Server - XSS (CVE-2025-14046)

CVSS 8.6 (High)

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