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CVE-2024-9539

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-10-11 · updated 2026-06-17
• Weakness: CWE-200

Description

An information disclosure vulnerability was identified in GitHub Enterprise Server via attacker uploaded asset URL allowing the attacker to retrieve metadata information of a user who clicks on the URL and further exploit it to create a convincing phishing page. This required the attacker to upload malicious SVG files and phish a victim user to click on that uploaded asset URL. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.14 and was fixed in versions 3.14.2, 3.13.5, 3.12.10, 3.11.16. This vulnerability was reported via the GitHub Bug Bounty program.

Affected products

• GitHub Enterprise Server: before 3.11.16; from 3.12.0 before 3.12.10; from 3.13.0 before 3.13.5; from 3.14.0 before 3.14.2 — fixed in 3.11.16, 3.12.10, 3.13.5, 3.14.2

How to fix

Upgrade to a fixed version: GitHub Enterprise Server 3.11.16, 3.12.10, 3.13.5, 3.14.2. Check the vendor advisory for mitigations.

References

• https://docs.github.com/en/enterprise-server@3.11/admin/release-notes#3.11.16
• https://docs.github.com/en/enterprise-server@3.12/admin/release-notes#3.12.10
• https://docs.github.com/en/enterprise-server@3.13/admin/release-notes#3.13.5
• https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.2

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