Redash DuckDB query runner lets users read and write arbitrary files
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-284.
Summary
Redash from 26.0.0 before 26.9.0 is affected. The DuckDB query runner creates connections with enable_external_access left at its default of true, an improper access control flaw (CWE-284). A user with query access to an administrator-created DuckDB data source can read files that the Redash process can read and can write files with its privileges. Reading application secrets such as REDASH_SECRET_KEY could enable forged sessions and authentication bypass.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
Redash is a package for data visualization and sharing. From 26.0.0 until 26.9.0, the DuckDB query runner's _connect() path in redash/query_runner/duckdb.py created connections with enable_external_access left at its default value of true. A user with query access to an administrator-created DuckDB data source could use native file-reading functions to retrieve files readable by the Redash process or use COPY TO to write files with that process's privileges. Reading application secrets such as REDASH_COOKIE_SECRET or REDASH_SECRET_KEY could also enable forged sessions and authentication bypass. This issue is fixed in version 26.9.0.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade Redash to version 26.9.0, which fixes the issue. No vendor advisory identifier is listed in the sources.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA redash (getredash) Fixed in 26.9.0
Timeline
- 2026-10-15 Threatist record created from CVE-2026-77371
References
More getredash vulnerabilities
- TI-2026-74373 SQL injection in Redash Query Results parameter substitution CVSS 4.0HIGH 8.7
- TI-2021-18031 Insecure default configuration CVSS 3.1HIGH 8.1
- TI-2021-19587 Server-Side Request Forgery (SSRF) in Redash CVSS 3.1HIGH 8.8
- TI-2020-10116 Havoc Research discovered an authenticated Server-Side Request Forgery (SSRF) via the… CVSS 3.1HIGH 7.2
- TI-2021-19584 Vulnerability in Redash OAuth2 flows due to misuse of state field (should be a nonce) CVSS 3.1MEDIUM 6.8
- TI-2026-25634 Redash: Open redirect vulnerability in post-login redirect handling CVSS 3.1MEDIUM 6.1
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences