CVE-2026-30920

OneUptime has broken access control in GitHub App installation flow that allows unauthorized project binding

State: Published
Severity: 8.6 High
Published: Mar 9, 2026
Updated: Mar 10, 2026
Reserved: Mar 7, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	8.6 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L	GitHub_M

Weaknesses

CWE-345 Insufficient Verification of Data Authenticity
CWE-639 Authorization Bypass Through User-Controlled Key
CWE-862 Missing Authorization

Affected Products

Product	Versions
oneuptimeOneUptime	< 10.0.19Affected

References

https://github.com/OneUptime/oneuptime/security/advisories/GHSA-656w-6f6c-m9r6

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