Authenticated data modification via undisclosed authorization flaw
Published May 18, 2026 · Updated May 18, 2026
Incorrect authorization in HCL Connections 8.0 allows remote authenticated users to update data through a network request. HCL has not disclosed the affected endpoint or how its authorization logic mishandles the request. Exploitation requires low-privileged access and user interaction; the flaw permits limited data disclosure or modification without interrupting service.
Summary
What happened
Incorrect authorization in HCL Connections 8.0 allows remote authenticated users to update data through a network request. HCL has not disclosed the affected endpoint or how its authorization logic mishandles the request. Exploitation requires low-privileged access and user interaction; the flaw permits limited data disclosure or modification without interrupting service.
The record
- CVE
- CVE-2026-21789
- Published
- May 18, 2026
- Updated
- May 18, 2026
- Vendor
- HCL Software
- Product
- HCL Connections
- Classifications
- CWE-863, T1565.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 18, 2026CVE publishedPublication date reported by the CVE source.
- May 18, 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?
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- Affected versionversion=8.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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