CVE-2026-81838: A relative path traversal issue in the zip extraction functionality in AWS diagram-as-code (awsdac) in version

Routine

HIGH 7.1WATCHLISTUPGRADE

CVE-2026-81838 is a high-severity flaw (CVSS 7.1) affecting diagram-as-code. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A relative path traversal issue in the zip extraction functionality in AWS diagram-as-code (awsdac) in versions 0.10 through 0.23 can allow a third party to write arbitrary files to the local filesystem via crafted zip entry names containing path traversal sequences. This could allow the third party to perform inappropriate actions in the diagram bundle. To remediate this issue, users should upgrade to the version 0.24 or later.

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 90%)
CISA exploited list	No
Weakness	CWE-23
Published	2026-08-27
Last modified	2026-09-04

Publisher (CNA): AMZN · Vendor: amazon

Last updated 2026-09-04 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-27 20:18 UTCPublished CVE record published
2026-09-04 13:51 UTCUpdated Record last modified

amazon diagram-as-code UPGRADE

Affected: >= 0.10 and < 0.24

Fixed in: 0.24

Safe to downgrade to: a release before 0.10

1. Check installed version

apt-cache policy diagram-as-code || rpm -q diagram-as-code || diagram-as-code --version

2. UPGRADE to 0.24 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade diagram-as-code

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade diagram-as-code

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 0.10 (Debian / Ubuntu)

apt-cache madison diagram-as-code sudo apt install diagram-as-code=<VERSION_BEFORE_0.10> sudo apt-mark hold diagram-as-code

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

dnf --showduplicates list diagram-as-code sudo dnf downgrade diagram-as-code-<VERSION_BEFORE_0.10> sudo dnf versionlock add diagram-as-code

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-2026-81838?

diagram-as-code: upgrade to 0.24. Exact commands for each OS are on this page.

Is CVE-2026-81838 being exploited?

CVE-2026-81838 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-2026-81838 affect?

CVE-2026-81838 affects diagram-as-code. Severity is high (CVSS 7.1). A relative path traversal issue in the zip extraction functionality in AWS diagram-as-code (awsdac) in versions 0.10 through 0.23 can allow a third party to write arbitrary files to the local filesystem via crafted zip entry names containin

How urgent is CVE-2026-81838?

Priority 32/100. High severity; On your watchlist

Software pages

AWS vulnerabilities

References

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