CVE-2026-81838Hinoki check available

Arbitrary file write via traversing ZIP entries

Published Aug 27, 2026 · Updated Aug 27, 2026

Path traversal in Amazon Web Services Diagram-as-code 0.10 through 0.23 allows attackers to write local files via crafted ZIP entries. The ZipFile resource extraction path accepts traversal sequences in archive entry names and writes the resolved entries without confining them to the cache directory. Exploitation requires awsdac to process an untrusted definition; a chosen write can lead to code execution with the executing account's permissions.

CVSS severityUnavailable
Unscored
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Path traversal in Amazon Web Services Diagram-as-code 0.10 through 0.23 allows attackers to write local files via crafted ZIP entries. The ZipFile resource extraction path accepts traversal sequences in archive entry names and writes the resolved entries without confining them to the cache directory. Exploitation requires awsdac to process an untrusted definition; a chosen write can lead to code execution with the executing account's permissions.

The record

CVE
CVE-2026-81838
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
Amazon Web Services
Product
Diagram-as-code
Classifications
T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=0.10 <=0.23

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Amazon Web Services · Diagram-as-codeversion=0.10 <=0.23

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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