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CVE-2026-21756— HCL Hive is affected by a broken access control vulnerability

Quick assessment

Affected
HCLSoftware HCL Hive
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

HCL Hive 存在一个 Broken Access Control（访问控制缺陷）漏洞，该漏洞可能导致攻击者或未经授权的用户直接将未经核实、恶意或损坏的代码注入生产环境。

CVSS 7.2 · High EPSS 0.32% · P24

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
HCLSoftware HCL Hive 1.0 affected
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I. Basic Information for CVE-2026-21756

Vulnerability Information
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Vulnerability Title
HCL Hive is affected by a broken access control vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
HCL Hive is affected by a broken access control vulnerability which could allow an attacker or unauthorized user to introduce unverified, malicious, or broken code directly into production environments.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权授予不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
HCLSoftware HCL Hive 1.0 -

II. Public POCs for CVE-2026-21756

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-21756

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Vendor Advisories for CVE-2026-21756 (1)

Same Patch Batch · HCLSoftware · 2026-08-24 · 7 CVEs total

CVE-2026-21752 7.5 HIGH HCL Hive is affected by a use of vulnerable third-party components
CVE-2025-68825 7.5 HIGH HCL Hive is affected by incorrect default permissions
CVE-2026-21751 7.4 HIGH HCL Hive is affected by use of a cryptographic primitive with a risky implementation
CVE-2025-68833 5.3 MEDIUM HCL Hive is affected by use of a cryptographic primitive with a risky implementation
CVE-2026-21755 5.3 MEDIUM HCL Hive is affected by a missing rate limit
CVE-2026-21759 4.3 MEDIUM HCL Hive is affected by an information exposure vulnerability

IV. Related Vulnerabilities

Same product: HCL Hive
Same vendor: HCLSoftware
Same weakness: CWE-266

V. Comments for CVE-2026-21756

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