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CVE-2026-3306

MEDIUM

4.3

Description

An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed a user with read access to a repository and write access to a project to modify issue and pull request metadata through the project. When adding an item to a project that already existed, column value updates were applied without verifying the actor's repository write permissions. This vulnerability was reported via the GitHub Bug Bounty program and has been fixed in GitHub Enterprise Server versions 3.14.24, 3.15.19, 3.16.15, 3.17.12, 3.18.6 and 3.19.3.

CVE Details

CVSS v3.1 Score4.3

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published3/10/2026

Last Modified3/12/2026

Sourcenvd

Honeypot Sightings0

Affected Products

github:enterprise_server

Weaknesses (CWE)

CWE-639

References

https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.24(product-cna@github.com)

https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.19(product-cna@github.com)

https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.15(product-cna@github.com)

https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.12(product-cna@github.com)

https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.6(product-cna@github.com)

https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.3(product-cna@github.com)

IOC Correlations

No correlations recorded

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