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Fencer Intel
high 7.5

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 5y ago modified 4mo 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

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Timeline

  1. Published
  2. 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, 2026-11-09).

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

References

Sources

Fencer Intel 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.