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CVE-2026-30920

Hackerbay Oneuptime broken access control

8.6 HIGHPublic exploitEPSS 0.22%
  1. Published10 Mar 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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityLow
IntegrityHigh
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

Affected products

Hackerbay Oneuptime< 10.0.19

Remediation

Fixed in
Hackerbay Oneuptime≥ 10.0.19

References

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Frequently asked

Is CVE-2026-30920 being actively exploited?

CVE-2026-30920 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.22%.

How severe is CVE-2026-30920?

CVE-2026-30920 has a CVSS 3.1 base score of 8.6, rated high. EPSS estimates a 0.22% probability of exploitation.

Which products are affected by CVE-2026-30920?

Affected products include Hackerbay Oneuptime.

How do I fix CVE-2026-30920?

Upgrade affected software to a fixed version, for example Hackerbay Oneuptime 10.0.19 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-30920 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.