Gitea's initial GitLab migration version probe uses an HTTP client without a timeout and does not attach the migration task's cancellation context. An authenticated user who can start migrations can target an attacker-controlled server that keeps the response open indefinitely. The request continues after task cancellation and can exhaust the migration worker pool, preventing other migrations from progressing.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 5
https://blog.gitea.com/release-of-1.27.3/
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https://github.com/go-gitea/gitea/pull/39023
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https://github.com/go-gitea/gitea/pull/39035
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https://github.com/go-gitea/gitea/releases/tag/v1.27.3
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https://github.com/go-gitea/gitea/security/advisories/GHSA-5952-x23q-p23f
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