CVE-2026-33344: Dagu is a workflow engine with a built-in Web user interface

This month

HIGH 8.1UPGRADE

CVE-2026-33344 is a high-severity flaw (CVSS 8.1) 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. From version 2.0.0 to before version 2.3.1, the fix for CVE-2026-27598 added ValidateDAGName to CreateNewDAG and rewrote generateFilePath to use filepath.Base. This patched the CREATE path. The remaining API endpoints - GET, DELETE, RENAME, EXECUTE - all pass the {fileName} URL path parameter to locateDAG without calling ValidateDAGName. %2F-encoded forward slashes in the {fileName} se

Why this priority

High severity
Public exploit reference

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	0.5% (top 58%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-03-24
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

2026-03-24 20:16 UTCPublished CVE record published
2026-06-17 10:37 UTCUpdated Record last modified

dagu dagu UPGRADE

Affected: >= 2.0.0 and < 2.3.1

Fixed in: 2.3.1

Safe to downgrade to: a release before 2.0.0

1. Check installed version

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

2. UPGRADE to 2.3.1 (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.

3. If no update is available yet, DOWNGRADE to a release before 2.0.0 (Debian / Ubuntu)

apt-cache madison dagu sudo apt install dagu=<VERSION_BEFORE_2.0.0> sudo apt-mark hold dagu

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

dnf --showduplicates list dagu sudo dnf downgrade dagu-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add dagu

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-2026-33344?

dagu: upgrade to 2.3.1. Exact commands for each OS are on this page.

Is CVE-2026-33344 being exploited?

CVE-2026-33344 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-2026-33344 affect?

CVE-2026-33344 affects dagu. Severity is high (CVSS 8.1). Dagu is a workflow engine with a built-in Web user interface. From version 2.0.0 to before version 2.3.1, the fix for CVE-2026-27598 added ValidateDAGName to CreateNewDAG and rewrote generateFilePath to use filepath.Base. This patched the C

How urgent is CVE-2026-33344?

Priority 44/100. High severity; Public exploit reference

Related CVEs

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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