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CVE-2023-25826

CriticalPublished

Remote Code Execution in OpenTSDB

Published: May 3, 2023
Updated: Feb 13, 2025
Assigning CNA: SNPS
Evidence observed: Aug 5, 2026

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS probability estimate

42.8%

Moderate · next 30 days

Percentile: 98.7%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Due to insufficient validation of parameters passed to the legacy HTTP query API, it is possible to inject crafted OS commands into multiple parameters and execute malicious code on the OpenTSDB host system. This exploit exists due to an incomplete fix that was made when this vulnerability was previously disclosed as CVE-2020-35476. Regex validation that was implemented to restrict allowed input to the query API does not work as intended, allowing crafted commands to bypass validation.

Sources

opentsdb_key_cmd_injectionExploit
An exploit for OpenTSDB <= 2.4.1 cmd injection (CVE-2023-36812/CVE-2023-25826) written in Fortran

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