CVE-2026-108550: SkillHub before 0.2.22 Account Takeover via Account Merge Flow
SkillHub before 0.2.22 contains an incorrect authorization vulnerability in AccountMergeService and AccountMergeController that allows authenticated attackers to take over other accounts by abusing the merge flow. Attackers can call the merge initiate endpoint with a target username or OAuth identity, receive the verification token directly, and confirm the merge to inherit the victim's API tokens, roles and namespace ownership.
Affected Software
Event History
Frequently Asked Questions
What does an attacker need to exploit this issue?
The attacker needs to be authenticated to SkillHub. They can initiate an account merge using a target username or OAuth identity, obtain the verification token, and confirm the merge without user interaction.
What access can an attacker gain after a successful takeover?
A successful merge lets the attacker inherit the victim account's API tokens, roles, and namespace ownership. This can result in full compromise of the targeted account's privileges and resources.
Which SkillHub versions are affected?
SkillHub versions before 0.2.22 are affected. Updating to 0.2.22 or later addresses the vulnerable account merge authorization behavior.