Unauthorized backend requests via DOM ID collisions
Published Dec 11, 2025 · Updated Dec 11, 2025
Cross-site scripting in GitHub Enterprise Server allows remote authenticated users to trigger unauthorized backend requests through crafted HTML. Insufficient sanitization lets user-supplied elements reuse IDs assigned to server-initialized data islands, overwriting or shadowing Project-view state objects. Successful exploitation requires instance access and a privileged user to view the crafted content; the resulting requests execute with that viewer's backend context.
Summary
What happened
Cross-site scripting in GitHub Enterprise Server allows remote authenticated users to trigger unauthorized backend requests through crafted HTML. Insufficient sanitization lets user-supplied elements reuse IDs assigned to server-initialized data islands, overwriting or shadowing Project-view state objects. Successful exploitation requires instance access and a privileged user to view the crafted content; the resulting requests execute with that viewer's backend context.
The record
- CVE
- CVE-2025-14046
- Published
- Dec 11, 2025
- Updated
- Dec 11, 2025
- Vendor
- Product
- GitHub Enterprise Server
- Classifications
- CWE-79
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 11, 2025CVE publishedPublication date reported by the CVE source.
- Dec 11, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=3.14.0 <=3.14.20 changes=[{"at":"3.14.21","status":"unaffected"}]
- Affected versionversion=3.15.0 <=3.15.15 changes=[{"at":"3.15.16","status":"unaffected"}]
- Affected versionversion=3.16.0 <=3.16.11 changes=[{"at":"3.16.12","status":"unaffected"}]
- Affected versionversion=3.17.0 <=3.17.8 changes=[{"at":"3.17.9","status":"unaffected"}]
- Affected versionversion=3.18.0 <=3.18.2 changes=[{"at":"3.18.3","status":"unaffected"}]
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What is affected?
Published CVSS scores
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Attacks
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Weakness, pattern, technique
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Technologies
Your stack
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Your stack
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