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DTStack Taier CVE-2026-19761

| EUVDEUVD-2026-58555 MEDIUM
Path Traversal (CWE-22)
2026-08-14 cna@vuldb.com GHSA-5p6w-9cvf-5vx6
Path Traversal Java
5.1
CVSS 4.0 · Vendor: vuldb
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Severity by source

Vendor (vuldb) PRIMARY
5.1 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
4.7 MEDIUM

Network-reachable but requires high privileges (PR:H); file write primitive yields low C/I/A - overwriting files could affect availability.

3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (vuldb).

CVSS VectorVendor: vuldb

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
X

Lifecycle Timeline

2
Source Code Evidence Fetched
Aug 14, 2026 - 03:44 vuln.today
Analysis Generated
Aug 14, 2026 - 03:44 vuln.today

DescriptionCVE.org

A vulnerability has been found in DTStack Taier 1.4.0. Affected is the function MultipartFile.getOriginalFilename of the file UploadController.java of the component Upload Controller. The manipulation of the argument File leads to path traversal. The attack may be initiated remotely. Upgrading to version 1.5.0 is able to address this issue. The identifier of the patch is 572773c4315e23e51e30115151cb091749a8d03e. It is advisable to upgrade the affected component.

AnalysisAI

Path traversal in DTStack Taier 1.4.0's UploadController allows privileged remote attackers to write files outside the intended upload directory by supplying a crafted filename containing sequences such as '../' or absolute paths. The commit diff confirms that MultipartFile.getOriginalFilename() output was concatenated directly into a filesystem path without any sanitization before the fix. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated session with high-privilege access to the Taier platform (PR:H per CVSS 4.0 vector) - the upload endpoint must be reachable and the attacker must hold a role permitted to invoke UploadController file upload operations. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 5.1 (AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L) accurately reflects the constrained real-world risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade to DTStack Taier version 1.5.0, which contains the fix delivered in commit 572773c4315e23e51e30115151cb091749a8d03e; the patched release is available at https://github.com/DTStack/Taier/releases/tag/v1.5.0. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-19761 vulnerability details – vuln.today
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