---
id: CVE-2026-108718
title: >-
  Rill 0.77.0 through 0.90.5 contains a missing authorization vulnerability in
  the admin OAuth server that issues authorization codes to dynamically
  registered clients without user consent
summary: >-
  Rill 0.77.0 through 0.90.5 contains a missing authorization vulnerability in
  the admin OAuth server that issues authorization codes to dynamically
  registered clients without user consent. Attackers can register a client with
  the long_liv…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'
cwe:
  - CWE-862
published: '2026-10-11'
updated: '2026-10-11'
sourceUpdated: '2026-10-11T13:17:15.020'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-108718'
references:
  - url: 'https://github.com/rilldata/rill'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/rilldata/rill/blob/b9ea8c6f215e56c4c0848771e70b3ec38346eacc/admin/server/auth/handlers.go#L650-L697
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/rilldata/rill/blob/b9ea8c6f215e56c4c0848771e70b3ec38346eacc/admin/server/auth/mcp_oauth.go#L77-L153
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/rilldata/rill/blob/b9ea8c6f215e56c4c0848771e70b3ec38346eacc/admin/server/auth/pkce.go#L173-L214
    label: disclosure@vulncheck.com
  - url: 'https://hackmd.io/@haind03/rill-oauth-open-registration-long-lived-token'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/rill-0.77.0-through-0.90.5-oauth-missing-authorization-via-dynamic-client-registration
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-11T13:51:17.026Z'
---

## Overview

Rill 0.77.0 through 0.90.5 contains a missing authorization vulnerability in the admin OAuth server that issues authorization codes to dynamically registered clients without user consent. Attackers can register a client with the long_lived_access_token scope and lure a user to an authorization link, obtaining a non-expiring API token with the user's full permissions.

## Remediation

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