CVE-2026-21759 HCL Hive is affected by an information exposure vulnerability
Attackers can access public Swagger API documentation, increasing the attack surface by revealing internal API structures.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-21759?
CVE-2026-21759 is a medium-severity vulnerability in HCLSoftware HCL Hive, published on 24 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
HCL Hive is affected by an information exposure vulnerability where Swagger documentation was found exposed publicly. Although no sensitive information (e.g., credentials, PII) was discovered, exposing API documentation to unauthenticated users can increase the overall attack surface.
Weakness: CWE-215
Which versions are affected by CVE-2026-21759?
How do I fix CVE-2026-21759?
No fix has been published for CVE-2026-21759 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-21759 being exploited?
There is no known exploitation of CVE-2026-21759 in the wild and no public exploit code.
Sources
Also known as GHSA-782w-m9ch-xmp8.