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CVE-2026-34758 โ€” AI Deep Analysis Summary

CVSS 9.1 ยท Critical

Q1What is this vulnerability? (Essence + Consequences)

๐Ÿšจ **Essence**: OneUptime has a critical **Access Control Error**. ๐Ÿ“‰ **Consequences**: Attackers can abuse notification systems (SMS, Calls, Email, WhatsApp) and buy phone numbers without permission.โ€ฆ

Q2Root Cause? (CWE/Flaw)

๐Ÿ›ก๏ธ **CWE**: CWE-306 (Missing Authentication for Critical Function). ๐Ÿ” **Flaw**: The system fails to verify user identity before allowing access to sensitive endpoints. Itโ€™s a classic **Broken Access Control** issue.

Q3Who is affected? (Versions/Components)

๐Ÿข **Vendor**: OneUptime. ๐Ÿ“ฆ **Product**: OneUptime (Open Source Monitoring Solution). โš ๏ธ **Affected Versions**: All versions **prior to 10.0.42**. If you are running 10.0.41 or lower, you are vulnerable.

Q4What can hackers do? (Privileges/Data)

๐Ÿ•ต๏ธ **Privileges**: None required (Unauthenticated). ๐Ÿ“ค **Data/Actions**: Hackers can trigger notifications via SMS, Voice, Email, and WhatsApp. They can also **purchase phone numbers** using your account credits.โ€ฆ

Q5Is exploitation threshold high? (Auth/Config)

๐Ÿ”“ **Threshold**: **LOW**. ๐Ÿšซ **Auth**: No authentication needed. ๐ŸŒ **Network**: Remote (AV:N). โšก **Complexity**: Low (AC:L). Any anonymous user on the internet can exploit this easily.

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

๐Ÿงช **Public Exp?**: No specific PoC code provided in the data. ๐Ÿ“ข **Status**: Confirmed via GitHub Security Advisory (GHSA-q253-6wcm-h8hp).โ€ฆ

Q7How to self-check? (Features/Scanning)

๐Ÿ” **Self-Check**: Try accessing notification test endpoints and phone number management URLs directly. ๐Ÿšซ If you get a response without logging in, you are vulnerable.โ€ฆ

Q8Is it fixed officially? (Patch/Mitigation)

โœ… **Fixed**: Yes! ๐Ÿ“ฆ **Patch**: Upgrade to **Version 10.0.42** or later. ๐Ÿ”— **Source**: Official GitHub Release and Security Advisory. This is the definitive fix.

Q9What if no patch? (Workaround)

๐Ÿ›‘ **Workaround**: If you cannot upgrade immediately, **block external access** to notification and phone management endpoints via firewall/WAF. ๐Ÿšซ Restrict these API routes to internal IPs only until patched.

Q10Is it urgent? (Priority Suggestion)

๐Ÿ”ฅ **Urgency**: **HIGH**. ๐Ÿ“ˆ **CVSS**: 9.1 (Critical). ๐Ÿšจ **Priority**: Patch immediately. The ability to buy phone numbers and send spam notifications without auth is a severe risk to your wallet and reputation.