CVE-2023-25826: Due to insufficient validation of parameters passed to the legacy HTTP query API, it is possible to inject cra

Q: How do I fix CVE-2023-25826?

opentsdb: upgrade to newer than 2.4.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-25826 being exploited?

CVE-2023-25826 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-25826 affect?

CVE-2023-25826 affects opentsdb. Severity is critical (CVSS 9.8). 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 in

Q: How urgent is CVE-2023-25826?

Priority 72/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2023-25826 is a critical-severity flaw (CVSS 9.8) affecting opentsdb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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, allowin

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	43.0% (top 1%)
CISA exploited list	No
Weakness	CWE-78
Published	2023-05-03
Last modified	2026-06-17

Publisher (CNA): Synopsys · Vendor: opentsdb

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-05-03 19:15 UTCPublished CVE record published
2026-06-17 05:42 UTCUpdated Record last modified

opentsdb opentsdb UPGRADE

Affected: >= 1.0.0 and <= 2.4.1

Fixed in: newer than 2.4.1

Safe to downgrade to: a release before 1.0.0

1. Check installed version

apt-cache policy opentsdb || rpm -q opentsdb || opentsdb --version

2. UPGRADE to newer than 2.4.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade opentsdb

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade opentsdb

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.0.0 (Debian / Ubuntu)

apt-cache madison opentsdb sudo apt install opentsdb=<VERSION_BEFORE_1.0.0> sudo apt-mark hold opentsdb

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list opentsdb sudo dnf downgrade opentsdb-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add opentsdb

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Exact fixes by distribution

Maven · net.opentsdb:opentsdb · NO FIX YET · vulnerable: <= 2.4.1 · source

Fedora 46 · borgmatic · FIXED · 2.2.0-1.fc46 · FEDORA-2026-041229e71b · source

sudo dnf upgrade --advisory=FEDORA-2026-041229e71b

Fedora ELN · pie · FIXED · 1.5.4-1.eln159 · FEDORA-2026-a2c0261d3a · source

sudo dnf upgrade --advisory=FEDORA-2026-a2c0261d3a

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Metasploit: OpenTSDB 2.4.1 unauthenticated command injection
Nuclei scan template: OpenTSDB <= 2.4.1 - Unauthenticated RCE via Gnuplot Injection

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-25826?

opentsdb: upgrade to newer than 2.4.1. Exact commands for each OS are on this page.

Is CVE-2023-25826 being exploited?

CVE-2023-25826 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-25826 affect?

CVE-2023-25826 affects opentsdb. Severity is critical (CVSS 9.8). 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 in

How urgent is CVE-2023-25826?

Priority 72/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-25827 HIGH 8.2 UPGRADE Due to insufficient validation of parameters reflected in error messages by the legacy HTTP query API and the

References

← Back to latest CVEs