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CVE-2026-11618— DTStack Taier Source Connection Test Endpoint LoginInterceptor.java preHandle improper authentication

Quick assessment

Affected
DTStack Taier
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Taier是袋鼠云（DTStack）开源的一个分布式调度系统。旨在降低 ETL 的成本，明确任务之间的复杂依赖关系，并降低提交、调度和运维方面的劳动力成本。 Taier 1.4.0及之前版本存在授权问题漏洞，该漏洞源于taier-data-develop/src/main/java/com/dtstack/taier/develop/interceptor/LoginInterceptor.java中的preHandle函数存在身份验证不当，可能导致远程攻击。

CVSS 7.3 · High EPSS 0.40% · P33

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 5

VendorProduct Version RangeStatus
DTStack Taier 1.0 affected
1.1 affected
1.2 affected
1.3 affected
1.4.0 affected
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I. Basic Information for CVE-2026-11618

Vulnerability Information
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Vulnerability Title
DTStack Taier Source Connection Test Endpoint LoginInterceptor.java preHandle improper authentication
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in DTStack Taier up to 1.4.0. The affected element is the function preHandle of the file taier-data-develop/src/main/java/com/dtstack/taier/develop/interceptor/LoginInterceptor.java of the component Source Connection Test Endpoint. Executing a manipulation can lead to improper authentication. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized. This patch is called f95389e7f74acec42bcee079a616aaa06f9551d2. A patch should be applied to remediate this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Taier 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Taier是袋鼠云（DTStack）开源的一个分布式调度系统。旨在降低 ETL 的成本，明确任务之间的复杂依赖关系，并降低提交、调度和运维方面的劳动力成本。 Taier 1.4.0及之前版本存在授权问题漏洞，该漏洞源于taier-data-develop/src/main/java/com/dtstack/taier/develop/interceptor/LoginInterceptor.java中的preHandle函数存在身份验证不当，可能导致远程攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
DTStack Taier 1.0 cpe:2.3:a:dtstack:taier:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-11618

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6796 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-11618

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Patches & Fixes for CVE-2026-11618 (1)

Proof of Concept for CVE-2026-11618 (1)

Vendor Pages for CVE-2026-11618 (1)

IV. Related Vulnerabilities

Same product: Taier
Same vendor: DTStack
Same weakness: CWE-287