CVE-2025-52574: SysmonElixir path traversal in /read endpoint allows arbitrary file read

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-24 · updated 2026-06-17
Weakness: CWE-22

Description

SysmonElixir is a system monitor HTTP service in Elixir. Prior to version 1.0.1, the /read endpoint reads any file from the server's /etc/passwd by default. In v1.0.1, a whitelist was added that limits reading to only files under priv/data. This issue has been patched in version 1.0.1.

Affected products

bocaletto-luca elixir-system-monitor: before 1.0.1

References

https://github.com/bocaletto-luca/elixir-system-monitor/commit/647a5525f6667a28f1133985213dd080ea11bb87
https://github.com/bocaletto-luca/elixir-system-monitor/security/advisories/GHSA-9vj4-rv7q-36qj

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