High severity8.8NVD Advisory· Published Aug 27, 2021· Updated Jun 17, 2026
CVE-2021-39173
CVE-2021-39173
Description
Cachet is an open source status page system. Prior to version 2.5.1 authenticated users, regardless of their privileges (User or Admin), can trick Cachet and install the instance again, leading to arbitrary code execution on the server. This issue was addressed in version 2.5.1 by improving the middleware ReadyForUse, which now performs a stricter validation of the instance name. As a workaround, only allow trusted source IP addresses to access to the administration dashboard.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
cachethq/cachetPackagist | < 2.5.1 | 2.5.1 |
Affected products
3Patches
Vulnerability mechanics
References
6- blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injection/nvdExploitThird Party Advisory
- github.com/advisories/GHSA-r67m-m8c7-jp83ghsaADVISORY
- github.com/fiveai/Cachet/releases/tag/v2.5.1nvdRelease NotesThird Party AdvisoryWEB
- github.com/fiveai/Cachet/security/advisories/GHSA-r67m-m8c7-jp83nvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2021-39173ghsaADVISORY
- blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injectionghsaWEB
News mentions
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