CVE-2026-21756 HCL Hive is affected by a broken access control vulnerability
An attacker can inject malicious code into production environments due to broken access control in HCL Hive.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-21756?
CVE-2026-21756 is a high-severity missing authorization vulnerability in HCLSoftware HCL Hive, published on 24 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official 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.
Weakness: CWE-266
Which versions are affected by CVE-2026-21756?
How do I fix CVE-2026-21756?
No fix has been published for CVE-2026-21756 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-21756 being exploited?
There is no known exploitation of CVE-2026-21756 in the wild and no public exploit code.
Sources
Also known as GHSA-mjvg-8gf9-v7m8.