---
id: CVE-2026-78231
title: >-
  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
summary: >-
  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…
severity: none
cwe:
  - CWE-918
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T16:04:39.483'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78231'
references:
  - url: 'https://github.com/go-gitea/gitea/security/advisories/GHSA-8vmh-w35x-73qr'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
tags:
  - nvd
ingestedAt: '2026-10-14T15:36:14.032Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.