Staging Environment: Content and features may be unstable or change without notice.
Search for vulnerabilities
Vulnerability details: VCID-vwh4-vx7r-rfg9
Vulnerability ID VCID-vwh4-vx7r-rfg9
Aliases CVE-2023-33977
GHSA-2fqm-m4r2-fh98
Summary Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Kiwi TCMS is an open source test management system for both manual and automated testing. Kiwi TCMS allows users to upload attachments to test plans, test cases, etc. Earlier versions of Kiwi TCMS had introduced upload validators in order to prevent potentially dangerous files from being uploaded and `Content-Security-Policy` definition to prevent cross-site-scripting attacks. The upload validation checks were not 100% robust which left the possibility to circumvent them and upload a potentially dangerous file which allows execution of arbitrary JavaScript in the browser. Additionally we've discovered that Nginx's `proxy_pass` directive will strip some headers negating protections built into Kiwi TCMS when served behind a reverse proxy. This issue has been addressed in version 12.4. Users are advised to upgrade. Users unable to upgrade who are serving Kiwi TCMS behind a reverse proxy should make sure that additional header values are still passed to the client browser. If they aren't redefining them inside the proxy configuration.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk None
Affected and Fixed Packages Package Details
Weaknesses (5)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-434 Unrestricted Upload of File with Dangerous Type
System Score Found at
epss 0.04614 https://api.first.org/data/v1/epss?cve=CVE-2023-33977
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-2fqm-m4r2-fh98
cvssv3.1 8.1 https://github.com/kiwitcms/Kiwi
generic_textual HIGH https://github.com/kiwitcms/Kiwi
cvssv3.1 8.1 https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L66-L68
generic_textual HIGH https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L66-L68
ssvc Track* https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L66-L68
cvssv3.1 8.1 https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L87
generic_textual HIGH https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L87
ssvc Track* https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L87
cvssv3.1 8.1 https://github.com/kiwitcms/kiwi/commit/d789f4b51025de4f8c747c037d02e1b0da80b034
generic_textual HIGH https://github.com/kiwitcms/kiwi/commit/d789f4b51025de4f8c747c037d02e1b0da80b034
cvssv3.1 8.1 https://github.com/kiwitcms/Kiwi/commit/d789f4b51025de4f8c747c037d02e1b0da80b034
ssvc Track* https://github.com/kiwitcms/Kiwi/commit/d789f4b51025de4f8c747c037d02e1b0da80b034
cvssv3.1 8.1 https://github.com/kiwitcms/Kiwi/security/advisories/GHSA-2fqm-m4r2-fh98
cvssv3.1_qr HIGH https://github.com/kiwitcms/Kiwi/security/advisories/GHSA-2fqm-m4r2-fh98
generic_textual HIGH https://github.com/kiwitcms/Kiwi/security/advisories/GHSA-2fqm-m4r2-fh98
ssvc Track* https://github.com/kiwitcms/Kiwi/security/advisories/GHSA-2fqm-m4r2-fh98
cvssv3.1 8.1 https://huntr.dev/bounties/6aea9a26-e29a-467b-aa5a-f767f0c2ec96
generic_textual HIGH https://huntr.dev/bounties/6aea9a26-e29a-467b-aa5a-f767f0c2ec96
cvssv3.1 8.1 https://huntr.dev/bounties/6aea9a26-e29a-467b-aa5a-f767f0c2ec96/
ssvc Track* https://huntr.dev/bounties/6aea9a26-e29a-467b-aa5a-f767f0c2ec96/
cvssv3.1 8.1 https://kiwitcms.org/blog/kiwi-tcms-team/2023/06/06/kiwi-tcms-124
generic_textual HIGH https://kiwitcms.org/blog/kiwi-tcms-team/2023/06/06/kiwi-tcms-124
cvssv3.1 8.1 https://nvd.nist.gov/vuln/detail/CVE-2023-33977
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2023-33977
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2023-33977
https://github.com/kiwitcms/Kiwi
https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L66-L68
https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L87
https://github.com/kiwitcms/kiwi/commit/d789f4b51025de4f8c747c037d02e1b0da80b034
https://huntr.dev/bounties/6aea9a26-e29a-467b-aa5a-f767f0c2ec96
https://huntr.dev/bounties/6aea9a26-e29a-467b-aa5a-f767f0c2ec96/
https://kiwitcms.org/blog/kiwi-tcms-team/2023/06/06/kiwi-tcms-124
https://kiwitcms.org/blog/kiwi-tcms-team/2023/06/06/kiwi-tcms-124/
CVE-2023-33977 https://nvd.nist.gov/vuln/detail/CVE-2023-33977
d789f4b51025de4f8c747c037d02e1b0da80b034 https://github.com/kiwitcms/Kiwi/commit/d789f4b51025de4f8c747c037d02e1b0da80b034
GHSA-2fqm-m4r2-fh98 https://github.com/advisories/GHSA-2fqm-m4r2-fh98
GHSA-2fqm-m4r2-fh98 https://github.com/kiwitcms/Kiwi/security/advisories/GHSA-2fqm-m4r2-fh98
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://github.com/kiwitcms/Kiwi
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L66-L68
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2025-01-07T18:29:53Z/ Found at https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L66-L68
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L87
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2025-01-07T18:29:53Z/ Found at https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L87
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://github.com/kiwitcms/kiwi/commit/d789f4b51025de4f8c747c037d02e1b0da80b034
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://github.com/kiwitcms/Kiwi/commit/d789f4b51025de4f8c747c037d02e1b0da80b034
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2025-01-07T18:29:53Z/ Found at https://github.com/kiwitcms/Kiwi/commit/d789f4b51025de4f8c747c037d02e1b0da80b034
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://github.com/kiwitcms/Kiwi/security/advisories/GHSA-2fqm-m4r2-fh98
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2025-01-07T18:29:53Z/ Found at https://github.com/kiwitcms/Kiwi/security/advisories/GHSA-2fqm-m4r2-fh98
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://huntr.dev/bounties/6aea9a26-e29a-467b-aa5a-f767f0c2ec96
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://huntr.dev/bounties/6aea9a26-e29a-467b-aa5a-f767f0c2ec96/
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2025-01-07T18:29:53Z/ Found at https://huntr.dev/bounties/6aea9a26-e29a-467b-aa5a-f767f0c2ec96/
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://kiwitcms.org/blog/kiwi-tcms-team/2023/06/06/kiwi-tcms-124
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-33977
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.89431
EPSS Score 0.04614
Published At May 30, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-05-30T21:00:47.380866+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/pypi/kiwitcms/CVE-2023-33977.yml 38.6.0