CVE-2021-40875 in the critical feed json
Improper Access Control in Gurock TestRail versions < 7.2.0.3014 resulted in sensitive information exposure.
published 2021-09-22 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-28030
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 47.5%
- EPSS 47.5% chance of exploitation in 30 days, percentile 98%
- public exploits
- 1
- Exploit-DB, plus a Nuclei check
Summary
Improper Access Control in Gurock TestRail versions < 7.2.0.3014 resulted in sensitive information exposure. A threat actor can access the /files.md5 file on the client side of a Gurock TestRail application, disclosing a full list of application files and the corresponding file paths. The corresponding file paths can be tested, and in some cases, result in the disclosure of hardcoded credentials, API keys, or other sensitive data.
Patch / fix
- gurock testrail 7.2.0.3014
Timeline
- Published
- First public exploit (EDB-50320)
Exploit prediction
47.49% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-50320 Gurock Testrail 7.2.0.3014 - 'files.md5' Improper Access Control webapps, 2021-09-23
- Nuclei template Gurock TestRail Application files.md5 Exposure nuclei detection template
- johnjhacking.com https://johnjhacking.com/blog/cve-2021-40875/ referenced PoC, tagged "exploit" by a source, unverified
- packetstormsecurity.com http://packetstormsecurity.com/files/164270/Gurock-Testrail-7.2.0.3014-Improper-Access-Control.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-425 Direct Request
References
-
johnjhacking.com
/blog/cve-2021-40875/
exploit, third-party-advisory
-
packetstormsecurity.com
/files/164270/Gurock-Testrail-7.2.0.3014-Improper-Access-Control.html
exploit, third-party-advisory, vdb-entry
-
gurock.com
/testrail/tour/enterprise-edition
product, vendor-advisory
-
github.com
/SakuraSamuraii/derailed
third-party-advisory
Sources
- CVE List CVE-2021-40875
- NVD CVE-2021-40875
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.