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CVE-2023-36809

Kiwi TCMS's misconfigured HTTP headers allow stored XSS execution with Firefox

8.1 HighFix available

Kiwi TCMS, an open source test management system allows users to upload attachments to test plans, test cases, etc. Versions of Kiwi TCMS prior to 12.5 had introduced changes which were meant to serve all uploaded files as plain text in order to prevent browsers from executing potentially dangerous files when such files are accessed directly. The previous Nginx configuration was incorrect allowing certain browsers like Firefox to ignore the Content-Type: text/plain header on some occasions thus allowing potentially dangerous scripts to be executed. Additionally, file upload validators and parts of the HTML rendering code had been found to require additional sanitation and improvements. Version 12.5 fixes this vulnerability with updated Nginx content type configuration, improved file upload validation code to prevent more potentially dangerous uploads, and Sanitization of test plan names used in the tree_view_html() function.

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
High
Integrity
High
Availability
None

Exploit likelihood

0.69%Up 0.6 points since Jul 6, 2023
90%50%10%1%

What each source reports

CVE List Score used 8.1

Kiwi TCMS's misconfigured HTTP headers allow stored XSS execution with Firefox

Kiwi TCMS, an open source test management system allows users to upload attachments to test plans, test cases, etc. Versions of Kiwi TCMS prior to 12.5 had introduced changes which were meant to serve all uploaded files as plain text in order to prevent browsers from executing potentially dangerous files when such files are accessed directly. The previous Nginx configuration was incorrect allowing certain browsers like Firefox to ignore the Content-Type: text/plain header on some occasions thus allowing potentially dangerous scripts to be executed. Additionally, file upload validators and parts of the HTML rendering code had been found to require additional sanitation and improvements. Version 12.5 fixes this vulnerability with updated Nginx content type configuration, improved file upload validation code to prevent more potentially dangerous uploads, and Sanitization of test plan names used in the tree_view_html() function.

Record
CVE-2023-36809
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Weakness
CWE-79, CWE-434
Updated
2026-11-02
EUVDEUVD-2023-2090 8.1

Kiwi TCMS, an open source test management system allows users to upload attachments to test plans, test cases, etc. Versions of Kiwi TCMS prior to 12.5 had introduced changes which were meant to serve all uploaded files as plain text in order to prevent browsers from executing potentially dangerous files when such files are accessed directly. The previous Nginx configuration was incorrect allowing certain browsers like Firefox to ignore the Content-Type: text/plain header on some occasions thus allowing potentially dangerous scripts to be executed. Additionally, file upload validators and parts of the HTML rendering code had been found to require additional sanitation and improvements. Version 12.5 fixes this vulnerability with updated Nginx content type configuration, improved file upload validation code to prevent more potentially dangerous uploads, and Sanitization of test plan names used in the tree_view_html() function.

Record
EUVD-2023-2090
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Updated
2026-11-03
GitHub AdvisoriesGHSA-jpgw-2r9m-8qfw 8.1

Kiwi TCMS's misconfigured HTTP headers allow stored XSS execution with Firefox

Impact

Kiwi TCMS allows users to upload attachments to test plans, test cases, etc. Earlier versions of Kiwi TCMS had introduced changes which were meant to serve all uploaded files as plain text in order to prevent browsers from executing potentially dangerous files when such files are accessed directly!

The previous Nginx configuration was incorrect allowing certain browsers like Firefox to ignore the Content-Type: text/plain header on some occasions thus allowing potentially dangerous scripts to be executed.

Additionally file upload validators and parts of the HTML rendering code have been found to require additional sanitation and improvements.

Patches

  • Updated Nginx content type configuration
  • Improved file upload validation code to prevent more potentially dangerous uploads
  • Sanitization of test plan names used in the tree_view_html() function

References

Disclosed by M Nadeem Qazi and Mahshooq Zubair.

Record
GHSA-jpgw-2r9m-8qfw
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Weakness
CWE-79, CWE-434
Updated
2026-11-02
NVD 8.1

Kiwi TCMS, an open source test management system allows users to upload attachments to test plans, test cases, etc. Versions of Kiwi TCMS prior to 12.5 had introduced changes which were meant to serve all uploaded files as plain text in order to prevent browsers from executing potentially dangerous files when such files are accessed directly. The previous Nginx configuration was incorrect allowing certain browsers like Firefox to ignore the Content-Type: text/plain header on some occasions thus allowing potentially dangerous scripts to be executed. Additionally, file upload validators and parts of the HTML rendering code had been found to require additional sanitation and improvements. Version 12.5 fixes this vulnerability with updated Nginx content type configuration, improved file upload validation code to prevent more potentially dangerous uploads, and Sanitization of test plan names used in the tree_view_html() function.

Record
CVE-2023-36809
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79, CWE-434
Updated
2026-11-02
OSV 8.1

Kiwi TCMS's misconfigured HTTP headers allow stored XSS execution with Firefox

Kiwi TCMS, an open source test management system allows users to upload attachments to test plans, test cases, etc. Versions of Kiwi TCMS prior to 12.5 had introduced changes which were meant to serve all uploaded files as plain text in order to prevent browsers from executing potentially dangerous files when such files are accessed directly. The previous Nginx configuration was incorrect allowing certain browsers like Firefox to ignore the Content-Type: text/plain header on some occasions thus allowing potentially dangerous scripts to be executed. Additionally, file upload validators and parts of the HTML rendering code had been found to require additional sanitation and improvements. Version 12.5 fixes this vulnerability with updated Nginx content type configuration, improved file upload validation code to prevent more potentially dangerous uploads, and Sanitization of test plan names used in the tree_view_html() function.

Record
CVE-2023-36809
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Weakness
CWE-434, CWE-79
Updated
2026-11-02
OSVGHSA-jpgw-2r9m-8qfw 8.1

Kiwi TCMS's misconfigured HTTP headers allow stored XSS execution with Firefox

Impact

Kiwi TCMS allows users to upload attachments to test plans, test cases, etc. Earlier versions of Kiwi TCMS had introduced changes which were meant to serve all uploaded files as plain text in order to prevent browsers from executing potentially dangerous files when such files are accessed directly!

The previous Nginx configuration was incorrect allowing certain browsers like Firefox to ignore the Content-Type: text/plain header on some occasions thus allowing potentially dangerous scripts to be executed.

Additionally file upload validators and parts of the HTML rendering code have been found to require additional sanitation and improvements.

Patches

  • Updated Nginx content type configuration
  • Improved file upload validation code to prevent more potentially dangerous uploads
  • Sanitization of test plan names used in the tree_view_html() function

References

Disclosed by M Nadeem Qazi and Mahshooq Zubair.

Record
GHSA-jpgw-2r9m-8qfw
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Weakness
CWE-434, CWE-79
Updated
2026-11-02
OSVPYSEC-2026-1499 8.1

Kiwi TCMS's misconfigured HTTP headers allow stored XSS execution with Firefox

Impact

Kiwi TCMS allows users to upload attachments to test plans, test cases, etc. Earlier versions of Kiwi TCMS had introduced changes which were meant to serve all uploaded files as plain text in order to prevent browsers from executing potentially dangerous files when such files are accessed directly!

The previous Nginx configuration was incorrect allowing certain browsers like Firefox to ignore the Content-Type: text/plain header on some occasions thus allowing potentially dangerous scripts to be executed.

Additionally file upload validators and parts of the HTML rendering code have been found to require additional sanitation and improvements.

Patches

  • Updated Nginx content type configuration
  • Improved file upload validation code to prevent more potentially dangerous uploads
  • Sanitization of test plan names used in the tree_view_html() function

References

Disclosed by M Nadeem Qazi and Mahshooq Zubair.

Record
PYSEC-2026-1499
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
kiwitcms
PyPI
before 12.5
12.5
kiwitcms
PyPI
before 12.5, plus listed versions
10.010.110.210.310.3.999
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10.410.511.011.111.311.411.511.611.712.012.112.212.312.46.106.116.2.16.36.46.56.5.36.66.76.86.97.07.17.27.2.17.38.08.18.1.998.28.38.48.58.68.6.18.78.88.99.09.999
12.5

History

History
RecordedChangedSources
aliases, products, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2023-36809 is a high vulnerability (CVSS 8.1) in Kiwitcms Kiwi, published July 5, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.69%, the 53rd percentile. Fixed in kiwitcms 12.5.

References

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