CVE-2026-77371 getredash CVE debrief

Who should care

Defenders responsible for Redash instances, especially those exposed to untrusted users, should prioritize patching and verifying file access controls. This includes reviewing compensating controls for exposed systems, monitoring for suspicious activity, and ensuring that sensitive application secrets are protected. Security teams should also track exceptions and retest remediated assets to confirm the effectiveness of the patch.

Why it matters

Defenders should prioritize patching Redash instances and verifying file access controls due to the critical vulnerability allowing arbitrary file read/write access.

• Potential unauthorized file reads and writes
• Possible exposure of sensitive application secrets
• Potential for forged sessions and authentication bypass

Technical summary

The Redash DuckDB query runner's _connect() path created connections with enable_external_access left at its default value of true, allowing users with query access to administrator-created DuckDB data sources to read and write files via unrestricted external access. This unrestricted access could lead to unauthorized file reads and writes, exposure of sensitive application secrets, and potential for forged sessions and authentication bypass. The issue is addressed in version 26.9.0 by properly configuring the enable_external_access parameter.

Defensive priority

Defenders should prioritize patching Redash instances, especially those exposed to untrusted users, and verify file access controls.

Recommended defensive actions

• Patch Redash instances to version 26.9.0 or later
• Verify file access controls and restrict access to sensitive files
• Monitor for suspicious activity and potential exploitation attempts
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the vulnerability, affected versions, and fixed version. However, additional information on potential exploits or victim organizations is not available. The issue allows arbitrary file access, which could lead to unauthorized data exposure or modification. Defenders should verify file access controls and monitor for suspicious activity.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.