CVE-2026-27194: Dtale Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-c87c-78rc-vmv2
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CWE-74
Published
Advisory Summary

CVE-2026-27194 is a HIGH remote code execution vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')) affecting Dtale libraries in the PyPI ecosystem. The issue involves d-tale affected by remote code execution through the /save-column-filter endpoint. Remediation is available by upgrading affected packages to version 3.20.0.

CVE-2026-27194 at a Glance

CVE Identifier CVE-2026-27194
GHSA Identifier GHSA-c87c-78rc-vmv2
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Affected Product Dtale
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix CVE-2026-27194

To remediate this vulnerability, upgrade all affected Dtale dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

dtale fixed: 3.20.0 
pip install dtale>=3.20.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show dtale

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-27194, inspect your installed packages using pip:

pip show dtale

Analyze the terminal output to locate any version of Dtale in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.20.0), your application is affected.

Note: The pip show dtale command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'), where the product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. In Dtale, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact Users hosting D-Tale publicly can be vulnerable to remote code execution allowing attackers to run malicious code on the server. ### Patches Users should upgrade to version 3.20.0. ### Workarounds There are no workarounds for versions < 3.20.0

CVE-2026-27194 Affected Dtale Versions

1 component(s)
Fixed Versions:
3.20.0
Product / Package Ecosystem Affected Versions Fixed Version
dtale
pypi/dtale
PyPI
< 3.20.0
3.20.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/man-group/dtale/security/advisories/GHSA-c87c-78rc-vmv2
NVD — CVE-2026-27194 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27194
Security Fix Commit FIX COMMIT
https://github.com/man-group/dtale/commit/431c6148d3c799de20e1dec86c4432f48e3d0746
Dtale Source Repository REPOSITORY
https://github.com/man-group/dtale

Frequently Asked Questions

What is CVE-2026-27194?
CVE-2026-27194 is a security vulnerability in Dtale involving D-Tale affected by Remote Code Execution through the /save-column-filter endpoint under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection').
Which Dtale versions are affected?
Affected versions include releases prior to 3.20.0 across affected packages: dtale.
What version fixes CVE-2026-27194?
Upgrading to 3.20.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is dtale affected?
Yes, dtale is affected in releases prior to 3.20.0. Upgrade your dependency to 3.20.0 or later.
What CWE is associated with CVE-2026-27194?
CVE-2026-27194 is classified under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.).
How can I check PyPI dependencies for CVE-2026-27194?
Run the dependency tree command: 'pip show dtale'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-c87c-78rc-vmv2",
  "modified" : "2026-02-23T22:26:09Z",
  "published" : "2026-02-19T20:29:05Z",
  "aliases" : [ "CVE-2026-27194" ],
  "summary" : "D-Tale affected by Remote Code Execution through the /save-column-filter endpoint",
  "details" : "### Impact\nUsers hosting D-Tale publicly can be vulnerable to remote code execution allowing attackers to run malicious code on the server.\n\n### Patches\nUsers should upgrade to version 3.20.0.\n\n### Workarounds\nThere are no workarounds for versions < 3.20.0",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "dtale"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.20.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/man-group/dtale/security/advisories/GHSA-c87c-78rc-vmv2"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-27194"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/man-group/dtale/commit/431c6148d3c799de20e1dec86c4432f48e3d0746"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/man-group/dtale"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-74" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-02-19T20:29:05Z",
    "nvd_published_at" : "2026-02-21T05:17:29Z"
  }
}