Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Hackerbay | Oneuptime | < 10.0.19 |
Related Weaknesses (CWE)
References
- https://github.com/OneUptime/oneuptime/security/advisories/GHSA-656w-6f6c-m9r6ExploitVendor Advisory
FAQ
What is CVE-2026-30920?
CVE-2026-30920 is a vulnerability with a CVSS score of 8.6 (HIGH). 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.g...
How severe is CVE-2026-30920?
CVE-2026-30920 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-30920?
Check the references section above for vendor advisories and patch information. Affected products include: Hackerbay Oneuptime.