CVE-2023-25826 — Due to insufficient validation of parameters passed to the legacy HTTP query API

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 vul

01What is this vulnerability?

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…

02Affected products

Vendor	Product	Versions
OpenTSDB	OpenTSDB	0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

08Timeline

• Published: 2023-05-03T18:33:59.306Z
• Last modified: 2025-02-13T16:44:39.737Z

09References

• www.synopsys.com — https://www.synopsys.com/blogs/software-security/opentsdb/
• github.com — https://github.com/OpenTSDB/opentsdb/pull/2275
• packetstormsecurity.com — http://packetstormsecurity.com/files/174570/OpenTSDB-2.4.1-Unauthenticated-Comma…