CVE-2020-6938
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA sensitive information disclosure vulnerability in Tableau Server 10.5, 2018.x, 2019.x, 2020.x released before June 26, 2020, could allow access to sensitive information in log files.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceThis vulnerability in Tableau Server allows unauthorized access to sensitive information contained in log files. The issue affects versions 10.5, 2018.x, 2019.x, and 2020.x released before June 26, 2020, likely due to improper access controls or path traversal that permits reading of log files that should be restricted.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 2018.1, <= 2020.2= 10.5CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
-
Identify installed Tableau Server versionRun 'tsm version' from the command line on the Tableau Server host, or check the About page in Tableau Server Administration interface.Affected if The version returned is 10.5, or falls within 2018.1 through 2020.2 inclusive.
-
Confirm version release dateCross-reference the installed version number with the Tableau Server release date. Versions released before June 26, 2020 within the 2018.x, 2019.x, and 2020.x branches are affected.Affected if The version was released before June 26, 2020 and matches the affected ranges.
-
Locate Tableau Server log directoryCheck the Tableau Server data directory for the 'logs' or 'tabadmin' log folders. Default locations typically include the data directory under the Tableau Server installation path.Affected if Log directories exist on the server and may be accessible over the network.
-
Verify log file access controlsAttempt to access log files from a non-privileged user account or over the network to confirm whether unrestricted access is possible.Affected if Log files can be read by unauthorized users or applications without authentication.
If Tableau Server version is 10.5 or between 2018.1 and 2020.2 and was released before June 26, 2020, the environment is likely affected by this vulnerability.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpgrade Tableau Server to a version released on or after June 26, 2020, or implement access controls to restrict unauthorized access to log files.
- Consultation6.0 h
- Implementation12.0 h
- Testing10.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,928.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-6938 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2020-6938 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data