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CVE-2019-13127

mxGraph vulnerable to cross-site scripting in color field

6.1 MediumFix available

An issue was discovered in mxGraph through 4.0.0, related to the "draw.io Diagrams" plugin before 8.3.14 for Confluence and other products. Improper input validation/sanitization of a color field leads to XSS. This is associated with javascript/examples/grapheditor/www/js/Dialogs.js.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

1.50%Up 0.7 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 6.1

An issue was discovered in mxGraph through 4.0.0, related to the "draw.io Diagrams" plugin before 8.3.14 for Confluence and other products. Improper input validation/sanitization of a color field leads to XSS. This is associated with javascript/examples/grapheditor/www/js/Dialogs.js.

Record
CVE-2019-13127
CVSS 3.0
6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness
CWE-20, CWE-79
Updated
2026-11-02
CVE List No score

An issue was discovered in mxGraph through 4.0.0, related to the "draw.io Diagrams" plugin before 8.3.14 for Confluence and other products. Improper input validation/sanitization of a color field leads to XSS. This is associated with javascript/examples/grapheditor/www/js/Dialogs.js.

Record
CVE-2019-13127
Updated
2026-11-02
EUVDEUVD-2022-5818 No score

An issue was discovered in mxGraph through 4.0.0, related to the "draw.io Diagrams" plugin before 8.3.14 for Confluence and other products. Improper input validation/sanitization of a color field leads to XSS. This is associated with javascript/examples/grapheditor/www/js/Dialogs.js.

Record
EUVD-2022-5818
Updated
2026-11-03
GitHub AdvisoriesGHSA-xm59-jvxm-cp3v 6.1

mxGraph vulnerable to cross-site scripting in color field

mxGraph through 4.0.0, related to the draw.io Diagrams plugin before 8.3.14 for Confluence and other products, is vulnerable to cross-site scripting. draw.io Diagrams allows the creation and editing of draw.io-based diagrams in Confluence. Among other things, it allows to set the background color of text displayed in the diagram. The color provided by the user is notproperly sanitized, leading to HTML and JavaScript code to be displayed "as it is" to visitors of the page. This allows attackers to execute JavaScript code in the context of the visitor's browser and session and to e.g. run Confluence command under the visitor's user or attack the visitor's browser.

Proof of Concept (PoC):

  1. Create a new draw.io Diagram, add an element and edit its background color and enter some text to the element
  2. Enter the following "color": onMouseOver=alert(1) a=
  3. Save and view the resulting diagram, moving your mouse over the text
Record
GHSA-xm59-jvxm-cp3v
CVSS 3.0
6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSV 6.1

An issue was discovered in mxGraph through 4.0.0, related to the "draw.io Diagrams" plugin before 8.3.14 for Confluence and other products. Improper input validation/sanitization of a color field leads to XSS. This is associated with javascript/examples/grapheditor/www/js/Dialogs.js.

Record
CVE-2019-13127
CVSS 3.0
6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
OSVGHSA-xm59-jvxm-cp3v 6.1

mxGraph vulnerable to cross-site scripting in color field

mxGraph through 4.0.0, related to the draw.io Diagrams plugin before 8.3.14 for Confluence and other products, is vulnerable to cross-site scripting. draw.io Diagrams allows the creation and editing of draw.io-based diagrams in Confluence. Among other things, it allows to set the background color of text displayed in the diagram. The color provided by the user is notproperly sanitized, leading to HTML and JavaScript code to be displayed "as it is" to visitors of the page. This allows attackers to execute JavaScript code in the context of the visitor's browser and session and to e.g. run Confluence command under the visitor's user or attack the visitor's browser.

Proof of Concept (PoC):

  1. Create a new draw.io Diagram, add an element and edit its background color and enter some text to the element
  2. Enter the following "color": onMouseOver=alert(1) a=
  3. Save and view the resulting diagram, moving your mouse over the text
Record
GHSA-xm59-jvxm-cp3v
CVSS 3.0
6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
mxgraph
npm
 through 4.0.0
4.0.1
mxgraph
npm
 before 4.0.1
4.0.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-13127 is a medium vulnerability (CVSS 6.1) in Draw Draw.io Diagrams, published July 1, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.50%, the 74th percentile. Fixed in mxgraph 4.0.1.

References

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