CVE-2026-21827 HCL Connections is vulnerable to an information disclosure vulnerability
An attacker can obtain sensitive information they are not entitled to due to improper handling of request data in HCL Connections.
- 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-2026-21827?
CVE-2026-21827 is a low-severity vulnerability in HCLSoftware Connections, published on 31 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 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.
Weakness: CWE-359
Which versions are affected by CVE-2026-21827?
How do I fix CVE-2026-21827?
No fix has been published for CVE-2026-21827 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-21827 being exploited?
There is no known exploitation of CVE-2026-21827 in the wild and no public exploit code.
Sources
Also known as GHSA-xq3v-phjg-8r8x.