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CVE-2026-31818 โ€” AI Deep Analysis Summary

CVSS 9.6 ยท Critical

Q1What is this vulnerability? (Essence + Consequences)

๐Ÿšจ **Essence**: Budibase < 3.33.4 has an **SSRF** flaw. ๐Ÿ“‰ **Consequences**: Attackers can forge server requests, bypassing internal network protections.โ€ฆ
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Q2Root Cause? (CWE/Flaw)

๐Ÿ›ก๏ธ **Root Cause**: **CWE-918** (SSRF). ๐Ÿ› **Flaw**: SSRF protection mechanism fails when specific **environment variables** are not set. โš ๏ธ **Result**: The security guard is asleep at the wheel.

Q3Who is affected? (Versions/Components)

๐Ÿ‘ฅ **Affected**: Users running **Budibase** versions **prior to 3.33.4**. ๐Ÿ“ฆ **Vendor**: Budibase (UK-based open-source low-code platform). ๐Ÿ“… **Published**: April 3, 2026.

Q4What can hackers do? (Privileges/Data)

๐Ÿ•ต๏ธ **Hackers Can**: Perform **Server-Side Request Forgery**. ๐Ÿ”“ **Privileges**: Requires **Low Privileges** (PR:L) but has **Low Complexity** (AC:L).โ€ฆ
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Q5Is exploitation threshold high? (Auth/Config)

๐Ÿ”‘ **Threshold**: **Medium**. ๐Ÿ›‘ **Auth**: Requires **Low Privileges** (not fully public). ๐Ÿ–ฑ๏ธ **UI**: No user interaction needed. ๐ŸŒ **Network**: Network accessible.โ€ฆ
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Q6Is there a public Exp? (PoC/Wild Exploitation)

๐Ÿ“œ **Public Exp?**: **No PoCs** listed in data. ๐Ÿ” **Status**: Advisory exists (GHSA-7r9j-r86q-7g45). ๐Ÿšซ **Wild Exp**: Unconfirmed. Wait for community tools before assuming wild exploitation.

Q7How to self-check? (Features/Scanning)

๐Ÿ” **Self-Check**: Scan for **Budibase** version < **3.33.4**. ๐ŸŒ **Feature**: Check if SSRF protections are active. โš™๏ธ **Config**: Verify if critical **environment variables** are properly configured.โ€ฆ
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Q8Is it fixed officially? (Patch/Mitigation)

โœ… **Fixed?**: **Yes**. ๐Ÿ“ฆ **Patch**: Upgrade to **Budibase 3.33.4** or later. ๐Ÿ”— **Commit**: Fix merged in PR #18236. ๐Ÿ›ก๏ธ **Action**: Update immediately to close the gap.

Q9What if no patch? (Workaround)

๐Ÿšง **No Patch?**: Ensure all required **environment variables** for SSRF protection are explicitly set. ๐Ÿ›‘ **Mitigation**: Restrict network access to Budibase instances.โ€ฆ
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Q10Is it urgent? (Priority Suggestion)

๐Ÿ”ฅ **Urgency**: **HIGH**. ๐Ÿ“ˆ **Priority**: Patch ASAP. ๐Ÿ“‰ **CVSS**: 8.6 (High). โšก **Reason**: Low exploitation complexity + High impact. Don't wait for a PoC; fix the config/version now.

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Vulnerability detail Full AI analysis (login) Budibase CWE-918