CVE-2026-42810 — AI Deep Analysis Summary

Q: Root Cause? (CWE/Flaw)

🛡️ **CWE**: CWE-116 (Improper Labeling). 🔍 **Flaw**: The system reuses unescaped `*` characters from namespace/table names directly into S3 IAM resource patterns and `s3:prefix` conditions without sanitization.

Q: Who is affected? (Versions/Components)

📦 **Vendor**: Apache Software Foundation. 📉 **Product**: Apache Polaris. 🧪 **Tested Version**: Confirmed vulnerable in **Polaris 1.4.0** (and likely earlier).

Q: Is exploitation threshold high? (Auth/Config)

⚖️ **Threshold**: Medium. 🔑 **Auth**: Requires **Low Privilege** (PR:L). 🎯 **Config**: Attacker needs minimal permissions (`TABLE_CREATE`, `TABLE_WRITE_DATA`) on a namespace. No UI interaction needed.

Q: Is there a public Exp? (PoC/Wild Exploitation)

🚫 **Public Exp?**: No public PoC code provided in the advisory. 📝 **Status**: Private testing confirmed. Vendor advisory published. Wild exploitation is theoretically easy given the logic flaw.

Q: Is it fixed officially? (Patch/Mitigation)

🩹 **Fix**: Vendor advisory released (May 4, 2026). ✅ **Action**: Upgrade to the patched version of Apache Polaris immediately. Check the mailing list for specific patch versions.

Q: Is it urgent? (Priority Suggestion)

🔥 **Priority**: **HIGH**. 📈 **CVSS**: 9.3 (Critical). ⚠️ **Reason**: Remote code/data execution potential with low privileges. Direct impact on data integrity and confidentiality in S3 storage.

Updated May 06, 2026 CVSS 9.9 · Critical

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Q1What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: Apache Polaris fails to escape `*` in table names when generating S3 IAM policies. <br>💥 **Consequences**: `*` is treated as a wildcard, not literal text.…

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Q2Root Cause? (CWE/Flaw)

🛡️ **CWE**: CWE-116 (Improper Labeling). <br>🔍 **Flaw**: The system reuses unescaped `*` characters from namespace/table names directly into S3 IAM resource patterns and `s3:prefix` conditions without sanitization.

Q3Who is affected? (Versions/Components)

📦 **Vendor**: Apache Software Foundation. <br>📉 **Product**: Apache Polaris. <br>🧪 **Tested Version**: Confirmed vulnerable in **Polaris 1.4.0** (and likely earlier).

Q4What can hackers do? (Privileges/Data)

🕵️ **Attacks**: <br>1. **Read**: Access Iceberg metadata JSON (revealing data files/snapshots). <br>2. **List**: Enumerate exact S3 prefixes of other tables. <br>3.…

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Q5Is exploitation threshold high? (Auth/Config)

⚖️ **Threshold**: Medium. <br>🔑 **Auth**: Requires **Low Privilege** (PR:L). <br>🎯 **Config**: Attacker needs minimal permissions (`TABLE_CREATE`, `TABLE_WRITE_DATA`) on a namespace. No UI interaction needed.

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

🚫 **Public Exp?**: No public PoC code provided in the advisory. <br>📝 **Status**: Private testing confirmed. Vendor advisory published. Wild exploitation is theoretically easy given the logic flaw.

Q7How to self-check? (Features/Scanning)

🔎 **Self-Check**: <br>1. Check if using Apache Polaris. <br>2. Look for table names containing literal `*` characters. <br>3.…

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Q8Is it fixed officially? (Patch/Mitigation)

🩹 **Fix**: Vendor advisory released (May 4, 2026). <br>✅ **Action**: Upgrade to the patched version of Apache Polaris immediately. Check the mailing list for specific patch versions.

Q9What if no patch? (Workaround)

🚧 **Workaround**: <br>1. **Ban Wildcards**: Strictly forbid users from creating tables with `*` in names. <br>2.…

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Q10Is it urgent? (Priority Suggestion)

🔥 **Priority**: **HIGH**. <br>📈 **CVSS**: 9.3 (Critical). <br>⚠️ **Reason**: Remote code/data execution potential with low privileges. Direct impact on data integrity and confidentiality in S3 storage.

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Vulnerability detail Full AI analysis (login) Apache Software Foundation CWE-116