CVE-2026-19763Public exploitNetwork attack vector

Authenticated directory deletion via stored cluster name

Published Aug 14, 2026 · Updated Aug 14, 2026

Path traversal in DTStack Taier 1.4.0 allows remote authenticated users to delete server directories through a crafted cluster name. The cluster-creation flow stores clusterName without path validation, then getLocalKerberosPath concatenates it beneath the temporary root and FileUtils.deleteDirectory recursively deletes the resolved path. Cluster and component management access is required, and deletion is limited to paths writable by the Taier JVM account.

CVSS severity5.1
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in DTStack Taier 1.4.0 allows remote authenticated users to delete server directories through a crafted cluster name. The cluster-creation flow stores clusterName without path validation, then getLocalKerberosPath concatenates it beneath the temporary root and FileUtils.deleteDirectory recursively deletes the resolved path. Cluster and component management access is required, and deletion is limited to paths writable by the Taier JVM account.

The record

CVE
CVE-2026-19763
Published
Aug 14, 2026
Updated
Aug 14, 2026
Vendor
DTStack
Product
Taier
Classifications
CWE-22, T1485
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 14, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

DTStack · Taierversion=1.4.0

Published CVSS scores

5.1VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
4.7VulDB CNAAV:N/AC:L/Au:M/C:N/I:P/A:P
3.8VulDB CNACVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L

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)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1485Data Destruction

Public exploit references

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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