CVE-2023-26560: Northern.tech CFEngine Enterprise before 3.21.1 allows a subset of authenticated users to leverage the Schedul

Routine

MEDIUM 6.5UPGRADE

CVE-2023-26560 is a medium-severity flaw (CVSS 6.5) affecting cfengine. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Northern.tech CFEngine Enterprise before 3.21.1 allows a subset of authenticated users to leverage the Scheduled Reports feature to read arbitrary files and potentially discover credentials.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 54%)
CISA exploited list	No
Weakness	CWE-203
Published	2023-04-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: northern.tech

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

Am I affected?

Timeline

2023-04-26 00:15 UTCPublished CVE record published
2026-06-17 05:43 UTCUpdated Record last modified

northern.tech cfengine UPGRADE

Affected: >= 3.6.0 and < 3.21.1

Fixed in: 3.21.1

Safe to downgrade to: a release before 3.6.0

1. Check installed version

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

2. UPGRADE to 3.21.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cfengine

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 3.6.0 (Debian / Ubuntu)

apt-cache madison cfengine sudo apt install cfengine=<VERSION_BEFORE_3.6.0> sudo apt-mark hold cfengine

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

dnf --showduplicates list cfengine sudo dnf downgrade cfengine-<VERSION_BEFORE_3.6.0> sudo dnf versionlock add cfengine

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.

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-2023-26560?

cfengine: upgrade to 3.21.1. Exact commands for each OS are on this page.

Is CVE-2023-26560 being exploited?

CVE-2023-26560 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-2023-26560 affect?

CVE-2023-26560 affects cfengine. Severity is medium (CVSS 6.5). Northern.tech CFEngine Enterprise before 3.21.1 allows a subset of authenticated users to leverage the Scheduled Reports feature to read arbitrary files and potentially discover credentials.

How urgent is CVE-2023-26560?

Priority 34/100. No elevated risk signals yet.

Related CVEs

CVE-2026-24712 HIGH 7.3 UPGRADE Northern.tech CFEngine Enterprise and Community before 3.21.8, 3.24.3, and 3.27.0 allows Command injection.
CVE-2026-24711 MEDIUM 5.3 UPGRADE Northern.tech CFEngine Enterprise before 3.21.8, 3.24.3, and 3.27.0 has Incorrect Access Control.
CVE-2026-24710 MEDIUM 6.1 UPGRADE Northern.tech CFEngine Enterprise before 3.21.8, 3.24.3, and 3.27.0 allows XSS.
CVE-2023-45684 HIGH 7.5 UPGRADE Northern.tech CFEngine Enterprise before 3.21.3 allows SQL Injection
CVE-2021-44216 MEDIUM 5.5 UPGRADE Northern.tech CFEngine Enterprise before 3.15.5 and 3.18.x before 3.18.1 has Insecure Permissions that may all

References

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