CVE-2021-39165: Cachet is an open source status page

Q: How do I fix CVE-2021-39165?

cachet: upgrade to 2.3.18. Exact commands for each OS are on this page.

Q: Is CVE-2021-39165 being exploited?

CVE-2021-39165 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-2021-39165 affect?

CVE-2021-39165 affects cachet. Severity is high (CVSS 8.1). Cachet is an open source status page. With Cachet prior to and including 2.3.18, there is a SQL injection which is in the `SearchableTrait#scopeSearch()`. Attackers without authentication can utilize this vulnerability to exfiltrate sensiti

Q: How urgent is CVE-2021-39165?

Priority 52/100. High severity; EPSS top 5%: very likely to be exploited

This month

HIGH 8.1UPGRADE

CVE-2021-39165 is a high-severity flaw (CVSS 8.1) affecting cachet. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cachet is an open source status page. With Cachet prior to and including 2.3.18, there is a SQL injection which is in the `SearchableTrait#scopeSearch()`. Attackers without authentication can utilize this vulnerability to exfiltrate sensitive data from the database such as administrator's password and session. The original repository of Cachet <https://github.com/CachetHQ/Cachet> is not active, the stable version 2.3.18 and it's developing 2.4 br

Why this priority

High severity
EPSS top 5%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	8.2% (top 5%)
CISA exploited list	No
Weakness	CWE-89, CWE-287
Published	2021-08-26
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: chachethq

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

Am I affected?

Timeline

2021-08-26 21:15 UTCPublished CVE record published
2026-06-17 04:03 UTCUpdated Record last modified

chachethq cachet UPGRADE

Affected: < 2.3.18

Fixed in: 2.3.18

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.3.18 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cachet

Note

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

Public exploits and detection

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

Nuclei scan template: Cachet <=2.3.18 - SQL 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-2021-39165?

cachet: upgrade to 2.3.18. Exact commands for each OS are on this page.

Is CVE-2021-39165 being exploited?

CVE-2021-39165 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-2021-39165 affect?

CVE-2021-39165 affects cachet. Severity is high (CVSS 8.1). Cachet is an open source status page. With Cachet prior to and including 2.3.18, there is a SQL injection which is in the `SearchableTrait#scopeSearch()`. Attackers without authentication can utilize this vulnerability to exfiltrate sensiti

How urgent is CVE-2021-39165?

Priority 52/100. High severity; EPSS top 5%: very likely to be exploited

Software pages

GitHub vulnerabilities

Related CVEs

CVE-2023-43661 HIGH 8.8 UPGRADE Cachet is an open-source status page system

References

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