High
OneUptime has broken access control in GitHub App installation flow that allows unauthorized project binding
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-30920
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 01:59 UTC · Revision 1
Source evidence
OneUptime has broken access control in GitHub App installation flow that allows unauthorized project binding
core-osv · Original sourcePublished 9 Mar 2026, 22:57 UTC
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.
osv:CVE-2026-30920
Complete source record
{
"id": "e4f693bf019773966464a72f634f59f02e88b5deb70e593e146346fb81cb31d1",
"url": "https://osv.dev/vulnerability/CVE-2026-30920",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "OneUptime has broken access control in GitHub App installation flow that allows unauthorized project binding",
"summary": "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.",
"evidence": "osv:CVE-2026-30920",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-30920",
"aliases": [
"CVE-2026-30920",
"GHSA-656w-6f6c-m9r6"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/oneuptime/oneuptime",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "24278095d288a55e23d2057789966b0c2af84350"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "10.0.19"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"cpe": "cpe:2.3:a:hackerbay:oneuptime:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "10.0.19"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-30920.json"
}
}
],
"modified": "2026-10-28T02:30:32.602474450Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30920.json",
"https://github.com/OneUptime/oneuptime/security/advisories/GHSA-656w-6f6c-m9r6",
"https://nvd.nist.gov/vuln/detail/CVE-2026-30920"
],
"provider_metadata": {
"cwe_ids": [
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"CWE-639",
"CWE-862"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30920.json"
}
},
"related_cves": [
{
"value": "CVE-2026-30920",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 499521,
"published_at": "2026-03-09T22:57:05.745+00:00"
}