CVE-2026-33396

{"id": "CVE-2026-33396", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.9, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 3.1}]}, "published": "2026-03-26T14:16:13.310", "references": [{"url": "https://github.com/OneUptime/oneuptime/commit/e8e4ee3ff0740eb131045ab3d67453141c46178a", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OneUptime/oneuptime/security/advisories/GHSA-cqpg-phpp-9jjg", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OneUptime/oneuptime/security/advisories/GHSA-cqpg-phpp-9jjg", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-78"}, {"lang": "en", "value": "CWE-184"}, {"lang": "en", "value": "CWE-693"}]}], "descriptions": [{"lang": "en", "value": "OneUptime is an open-source monitoring and observability platform. Prior to version 10.0.35, a low-privileged authenticated user (ProjectMember) can achieve remote command execution on the Probe container/host by abusing Synthetic Monitor Playwright script execution. Synthetic monitor code is executed in VMRunner.runCodeInNodeVM with a live Playwright page object in context. The sandbox relies on a denylist of blocked properties/methods, but it is incomplete. Specifically, _browserType and launchServer are not blocked, so attacker code can traverse `page.context().browser()._browserType.launchServer(...)` and spawn arbitrary processes. Version 10.0.35 contains a patch."}], "lastModified": "2026-03-26T20:40:52.840", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:hackerbay:oneuptime:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BE6EDDCA-31EC-4458-ACF2-9FA51FAE4FAE", "versionEndExcluding": "10.0.35"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}