CVE-2026-24810
📋 TL;DR
A buffer overflow vulnerability in RethinkDB's cJSON parsing module allows attackers to execute arbitrary code or crash the database service by sending specially crafted input. This affects all RethinkDB deployments running versions up to 2.4.4. The vulnerability is in the core JSON parsing functionality used throughout the database.
💻 Affected Systems
- RethinkDB
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment
Likely Case
Service crash causing database downtime and potential data corruption
If Mitigated
Denial of service with no data loss if proper backups and isolation are in place
🎯 Exploit Status
Buffer overflow exploitation requires crafting specific input but no authentication is needed
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v2.4.5 or later
Vendor Advisory: https://github.com/rethinkdb/rethinkdb/pull/7163
Restart Required: Yes
Instructions:
1. Backup your RethinkDB data. 2. Stop RethinkDB service. 3. Upgrade to RethinkDB v2.4.5 or later. 4. Restart RethinkDB service. 5. Verify the upgrade was successful.
🔧 Temporary Workarounds
Network Isolation
linuxRestrict network access to RethinkDB to only trusted sources
iptables -A INPUT -p tcp --dport 28015 -s trusted_ip -j ACCEPT
iptables -A INPUT -p tcp --dport 28015 -j DROP
Process Isolation
linuxRun RethinkDB with minimal privileges in a container or chroot
docker run --security-opt=no-new-privileges rethinkdb:2.4.4
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to limit access to RethinkDB
- Deploy intrusion detection systems to monitor for buffer overflow attempts and anomalous behavior
🔍 How to Verify
Check if Vulnerable:
Check RethinkDB version: if version is 2.4.4 or earlier, the system is vulnerableCheck Version:
rethinkdb --versionVerify Fix Applied:
Verify RethinkDB version is 2.4.5 or later and test JSON parsing functionality📡 Detection & Monitoring
Log Indicators:
- Segmentation fault errors in RethinkDB logs
- Unexpected service restarts
- Large or malformed JSON input patterns
Network Indicators:
- Unusual traffic patterns to RethinkDB port 28015
- Multiple connection attempts with malformed data
SIEM Query:
source="rethinkdb.log" AND ("segmentation fault" OR "buffer overflow" OR "SIGSEGV")