GHSA-2fqm-m4r2-fh98 · Severity: high · Ecosystem: pip — kiwitcms vulnerable to stored cross-site scripting via unrestricted file upload
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.
Conclusion & alert: CVE-2023-33977 is rated High Exploit Risk (79.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 4.57%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-03-01 | 3.80% | 4.57% | +0.77% |
| 2 | 2025-11-21 | 2.03% | 3.80% | +1.77% |
| 3 | 2025-11-18 | — | 2.03% | — |
Full EPSS history (14 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.1 | 3.1 | HIGH |
|
2.8 | 5.2 | [email protected] |
| 5.4 | 3.1 | MEDIUM |
|
2.3 | 2.7 | [email protected] |
GHSA-2fqm-m4r2-fh98 · Severity: high · Ecosystem: pip — kiwitcms vulnerable to stored cross-site scripting via unrestricted file upload
| URL | Tags |
|---|---|
| https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L66-L68 | Product |
| https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf#L87 | Product |
| https://github.com/kiwitcms/Kiwi/commit/d789f4b51025de4f8c747c037d02e1b0da80b034 | Patch |
| https://github.com/kiwitcms/Kiwi/security/advisories/GHSA-2fqm-m4r2-fh98 | Mitigation Vendor Advisory |
| https://huntr.dev/bounties/6aea9a26-e29a-467b-aa5a-f767f0c2ec96/ | Exploit Issue Tracking Patch Third Party Advisory |