Is CVE-2026-3306 actively exploited?

No active exploitation of CVE-2026-3306 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3306 be exploited remotely?

Yes. CVE-2026-3306 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-3306?

CVE-2026-3306 has a CVSS score of 4.3 (MEDIUM).

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MEDIUM

CVE-2026-3306

CWE-639Published: March 10, 2026· Updated: Mar 12, 2026

4.3

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:9.9th

Official 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.

NVD Source

Technical Analysis

CVE-2026-3306 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.