CVE-2026-70357 Gitea CVE debrief

Who should care

Gitea administrators and users who perform repository migrations, security teams, and operators should assess exposure and prioritize updating to version 28.0.0 or later. They should review Gitea version and migration configurations, and monitor repository migration activity for suspicious behavior.

Why it matters

The CVE-2026-70357 vulnerability in Gitea repository migration allows an attacker to potentially access internal addresses through SSRF. Gitea administrators and users who perform repository migrations should assess exposure and prioritize updating to version 28.0.0 or later.

• Potential SSRF vulnerability allowing access to internal addresses
• Possible unauthorized access to internal resources
• Need to verify Gitea version and migration configurations
• Priority on updating Gitea to version 28.0.0 or later

Technical summary

Gitea validates a repository migration hostname against its network allow and block lists before invoking Git, but the Git subprocess independently resolves the hostname when connecting. An attacker who can start a migration and control the destination's DNS can change the address between validation and connection to reach a blocked internal address. The affected path is the Git clone operation; validation in the migration HTTP client's dialer does not protect the independently connecting Git subprocess. This can lead to potential SSRF vulnerability allowing access to internal addresses.

Defensive priority

medium

Recommended defensive actions

• Review and update Gitea to version 28.0.0 or later
• Restrict repository migration to trusted sources
• Monitor repository migration activity for suspicious behavior
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and source item provide details on the SSRF vulnerability in Gitea repository migration. The affected version is Gitea 1.27.3 and earlier. Evidence limits are based on CVE Program and NVD details. Defenders should verify Gitea version and migration configurations. The CVE record was published on 2026-10-06T19:24:50.540Z and has not been modified since then.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.