When OpenID sign-in is enabled, Gitea processes unauthenticated assertion parameters and sends an HTTP POST request to the caller-supplied OpenID provider endpoint during verification. An attacker controls the destination and much of the form body, allowing interaction with internal HTTP services reachable from the Gitea server. The response is not returned to the attacker, so the issue is blind SSRF; its impact depends on the services and network addresses the server can reach.
Advisories

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Sun, 18 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 18 Oct 2026 05:15:00 +0000

Type Values Removed Values Added
First Time appeared Gitea
Gitea gitea
Vendors & Products Gitea
Gitea gitea

Wed, 14 Oct 2026 15:00:00 +0000

Type Values Removed Values Added
Description When OpenID sign-in is enabled, Gitea processes unauthenticated assertion parameters and sends an HTTP POST request to the caller-supplied OpenID provider endpoint during verification. An attacker controls the destination and much of the form body, allowing interaction with internal HTTP services reachable from the Gitea server. The response is not returned to the attacker, so the issue is blind SSRF; its impact depends on the services and network addresses the server can reach.
Title Gitea blind SSRF through OpenID assertion verification
Weaknesses CWE-918
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Gitea

Published:

Updated: 2026-10-18T13:43:09.650Z

Reserved: 2026-08-24T20:45:09.301Z

Link: CVE-2026-78231

cve-icon Vulnrichment

Updated: 2026-10-18T13:43:04.231Z

cve-icon NVD

Status : Deferred

Published: 2026-10-14T15:17:25.533

Modified: 2026-10-18T14:16:56.357

Link: CVE-2026-78231

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-18T15:30:17Z

Weaknesses