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Fencer Vulns
critical 9.8

CVE-2023-25826 in the critical feed json

Remote Code Execution in OpenTSDB

published 2023-05-03 3 y ago modified 2026-06-17 4 mo ago also GHSA-h475-7v3c-26q7 , EUVD-2023-1552

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
43.0%
EPSS 43.0% chance of exploitation in 30 days, percentile 98%
public exploits
1
Metasploit, plus a Nuclei check

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.

Patch / fix

Timeline

  1. Published
  2. First public exploit (Metasploit exploit/linux/http/opentsdb_key_cmd_injection)

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
21 mo ago

Exploit prediction

43.04% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven net.opentsdb:opentsdb
<=2.4.1
no fix listed

Affected products

  • OpenTSDB OpenTSDB

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

Fencer Vulns 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.