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CVE-2026-30956 β€” AI Deep Analysis Summary

CVSS 10.0 Β· Critical

Q1What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: OneUptime < 10.0.21 has a critical **Authorization & Tenant Isolation Bypass**. πŸ“‰ **Consequences**: Leads to **Cross-Tenant Data Leakage** and full **Account Takeover**.…

Q2Root Cause? (CWE/Flaw)

πŸ›‘οΈ **Root Cause**: **CWE-285** (Improper Authorization). The system fails to properly verify if a user has permission to access resources belonging to a different tenant. 🚫 **Flaw**: Logic error in access control checks.

Q3Who is affected? (Versions/Components)

πŸ‘₯ **Affected**: **OneUptime** (Open Source Monitoring Solution). πŸ“¦ **Version**: All versions **prior to 10.0.21**. If you are running 10.0.20 or lower, you are vulnerable! ⚠️

Q4What can hackers do? (Privileges/Data)

πŸ’€ **Attacker Actions**: Hackers can **bypass tenant isolation**. They can read **other tenants' data** (cross-tenant leak) and potentially **take over accounts**. πŸ•΅οΈβ€β™‚οΈ High impact on confidentiality and integrity.

Q5Is exploitation threshold high? (Auth/Config)

πŸ”“ **Threshold**: **Low**. CVSS Vector: `AV:N/AC:L/PR:L/UI:N`. πŸ“ **Auth Required**: Yes (PR:L - Low Privileges). You need a valid account, but no complex setup or UI interaction needed. Easy to exploit if you have access.

Q6Is there a public Exp? (PoC/Wild Exploitation)

🚫 **Public Exploit**: **No**. The `pocs` array is empty. No public Proof-of-Concept (PoC) or wild exploitation scripts are currently available. 🀫

Q7How to self-check? (Features/Scanning)

πŸ” **Self-Check**: Check your **OneUptime version**. If it is **< 10.0.21**, you are at risk. πŸ“Š Look for the specific **Tenant Isolation** feature in your admin panel. Ensure no cross-tenant data access is possible.

Q8Is it fixed officially? (Patch/Mitigation)

βœ… **Fixed**: **Yes**. Official patch released in **v10.0.21**. πŸ“₯ **Mitigation**: Upgrade immediately to version 10.0.21 or later. Check the [GitHub Release](https://github.com/OneUptime/oneuptime/releases/tag/10.0.21).

Q9What if no patch? (Workaround)

πŸ›‘ **No Patch?**: If you cannot upgrade, **isolate** the instance. Restrict network access. Monitor logs for unusual **cross-tenant API calls**. πŸ›‘οΈ Limit user privileges to minimize damage.

Q10Is it urgent? (Priority Suggestion)

πŸ”₯ **Urgency**: **HIGH**. CVSS Score is likely **Critical** (H:H/H:H/H:H). πŸš€ **Priority**: Patch immediately. Data leakage and account takeover are severe risks. Do not delay! πŸƒβ€β™‚οΈπŸ’¨