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HCL Connections CVE-2026-21827

| EUVDEUVD-2026-68615 LOW
Exposure of Private Personal Information to an Unauthorized Actor (CWE-359)
2026-08-31 HCL GHSA-xq3v-phjg-8r8x
3.1
CVSS 3.1 · Vendor: HCL

Severity by source

Vendor (HCL) PRIMARY
3.1 LOW
AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
vuln.today AI
3.1 LOW

Network-accessible application with only partial data exposure; AC:H and UI:R reflect constrained attack prerequisites; no integrity or availability impact applies.

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

Primary rating from Vendor (HCL).

CVSS VectorVendor: HCL

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

1
Analysis Generated
Aug 31, 2026 - 16:21 vuln.today

DescriptionCVE.org

HCL Connections is vulnerable to an information disclosure vulnerability which could allow a user to obtain sensitive information they are not entitled to, caused by improper handling of request data they are not entitled to, caused by improper handling of request data.

AnalysisAI

HCL Connections exposes sensitive information to unauthorized users through improper handling of request data, classified under CWE-359 (Exposure of Private Personal Information to an Unauthorized Actor). The vulnerability affects all tracked versions per the wildcard CPE and is exploitable over the network, though high attack complexity (AC:H) and required user interaction (UI:R) substantially constrain real-world exploitability. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Exploit
technique details hidden
Execution
technique details hidden
Impact
technique details hidden

Vulnerability AssessmentAI

Exploitation User interaction is required (UI:R per CVSS vector) - a victim user must perform an action as part of the attack. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The aggregate risk signal for this vulnerability is low. … 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 Consult the HCL Software advisory at https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0130164 for the authoritative patched version and upgrade instructions; no specific fix version is identifiable from the provided input data. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-21827 vulnerability details – vuln.today

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