CVE-2026-27598: Dagu is a workflow engine with a built-in Web user interface

Q: How do I fix CVE-2026-27598?

dagu: upgrade to newer than 1.16.7. Exact commands for each OS are on this page.

Q: Is CVE-2026-27598 being exploited?

CVE-2026-27598 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-2026-27598 affect?

CVE-2026-27598 affects dagu. Severity is medium (CVSS 6.5). Dagu is a workflow engine with a built-in Web user interface. In versions up to and including 1.16.7, the `CreateNewDAG` API endpoint (`POST /api/v1/dags`) does not validate the DAG name before passing it to the file store. An authenticated

Q: How urgent is CVE-2026-27598?

Priority 40/100. Public exploit reference

This month

MEDIUM 6.5UPGRADE

CVE-2026-27598 is a medium-severity flaw (CVSS 6.5) affecting dagu. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Dagu is a workflow engine with a built-in Web user interface. In versions up to and including 1.16.7, the `CreateNewDAG` API endpoint (`POST /api/v1/dags`) does not validate the DAG name before passing it to the file store. An authenticated user with DAG write permissions can write arbitrary YAML files anywhere on the filesystem (limited by the process permissions). Since dagu executes DAG files as shell commands, writing a malicious DAG to the D

Why this priority

Public exploit reference

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	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-02-25
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2026-02-25 01:16 UTCPublished CVE record published
2026-06-17 10:27 UTCUpdated Record last modified

dagu dagu UPGRADE

Affected: <= 1.16.7

Fixed in: newer than 1.16.7

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.16.7 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dagu

Note

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

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-2026-27598?

dagu: upgrade to newer than 1.16.7. Exact commands for each OS are on this page.

Is CVE-2026-27598 being exploited?

CVE-2026-27598 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-2026-27598 affect?

CVE-2026-27598 affects dagu. Severity is medium (CVSS 6.5). Dagu is a workflow engine with a built-in Web user interface. In versions up to and including 1.16.7, the `CreateNewDAG` API endpoint (`POST /api/v1/dags`) does not validate the DAG name before passing it to the file store. An authenticated

How urgent is CVE-2026-27598?

Priority 40/100. Public exploit reference

Related CVEs

CVE-2026-33344 HIGH 8.1 UPGRADE Dagu is a workflow engine with a built-in Web user interface
CVE-2026-31886 CRITICAL 9.1 UPGRADE Dagu is a workflow engine with a built-in Web user interface
CVE-2026-31882 HIGH 7.5 UPGRADE Dagu is a workflow engine with a built-in Web user interface

References

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