Auth bypass in Rill Data
CVE-2026-108718
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.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind03/rill-oauth-open-registration-long-lived-token (third-party-advisory)
- github.com/rilldata/rill/blob/b9ea8c6f215e56c4c0848771e70b3ec38346eacc/admin/se… (technical-description)
- github.com/rilldata/rill/blob/b9ea8c6f215e56c4c0848771e70b3ec38346eacc/admin/se… (technical-description)
- github.com/rilldata/rill/blob/b9ea8c6f215e56c4c0848771e70b3ec38346eacc/admin/se… (technical-description)
- github.com/rilldata/rill (product)
- www.vulncheck.com/advisories/rill-0.77.0-through-0.90.5-oauth-missing-authoriza… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108718?
- CVE-2026-108718 is a high-severity vulnerability in Rill Data, classified under Missing Authorization. CVSS score: 8.1/10. Published 2026-10-11.
- How severe is CVE-2026-108718?
- High severity. CVSS v3 base score is 8.1 out of 10.