How severe is CVE-2026-81838?

CVE-2026-81838 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2026-81838 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-81838?

CVE-2026-81838 affects Amazon Diagram-as-code. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-81838?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-81838 published?

CVE-2026-81838 was published on 2026-08-27 and last updated on 2026-09-04.

CVE-2026-81838

CVE-2026-81838 is a high-severity vulnerability in Amazon Diagram-as-code with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-23.

Key facts

Severity: High (CVSS 3.x base score 7.1)
CVSS v4: 6.8
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-23
Affected product: Amazon Diagram-as-code
Published: 2026-08-27
Last modified: 2026-09-04

Description

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.

Frequently asked questions

What is CVE-2026-81838?: 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.
How severe is CVE-2026-81838?: CVE-2026-81838 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2026-81838 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-81838?: CVE-2026-81838 affects Amazon Diagram-as-code. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-81838?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-81838 published?: CVE-2026-81838 was published on 2026-08-27 and last updated on 2026-09-04.

References

Affected products (1)

cpe:2.3:a:amazon:diagram-as-code:*:*:*:*:*:*:*:*

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