CVE-2026-30920 OneUptime has broken access control in GitHub App installation flow that allows unauthorized project binding
Attackers can bind arbitrary GitHub App installations to other projects and enumerate repositories due to missing authorization checks in the callback flow.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-30920?
CVE-2026-30920 is a high-severity missing authorization vulnerability in oneuptime, published on 9 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OneUptime is a solution for monitoring and managing online services. Prior to 10.0.19, OneUptime's GitHub App callback trusts attacker-controlled state and installation_id values and updates Project.gitHubAppInstallationId with isRoot: true without validating that the caller is authorized for the target project. This allows an attacker to overwrite another project's GitHub App installation binding. Related GitHub endpoints also lack effective authorization, so a valid installation ID can be used to enumerate repositories and create CodeRepository records in an arbitrary project. This vulnerability is fixed in 10.0.19.
Which versions are affected by CVE-2026-30920?
2 open source packages ship an affected version, including @oneuptime/common. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
@oneuptime/common npm | All versions | 10.0.19 |
@oneuptime/common npm | All versions | 10.0.19 |
Products include Hackerbay Oneuptime.
How do I fix CVE-2026-30920?
Upgrade @oneuptime/common to 10.0.19 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-30920 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30920 exists.
Other vulnerabilities in oneuptime
- CVE-2026-33396 Code injection in oneuptime
- CVE-2026-32306 OneUptime ClickHouse SQL Injection via Aggregate Query Parameters
- CVE-2026-30956 OneUptime has authorization bypass via client‑controlled is-multi-tenant-query header
- CVE-2026-30957 OneUptime Synthetic Monitor RCE via exposed Playwright browser object
- CVE-2026-30887 OneUptime Affected by Unsandboxed Code Execution in Probe Allows Any Project Member to Achieve RCE
Sources
Also known as GHSA-656w-6f6c-m9r6.