CVE-2026-9007 Reflected XSS in HCL Notes
Reflected XSS in HCL Notes allows attackers to execute arbitrary JavaScript in the context of another user.
- 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-2026-9007?
CVE-2026-9007 is a medium-severity cross-site scripting vulnerability in HCL Notes, published on 15 Jul 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
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in HCL Notes from HCL Software allows reflected
Cross-Site Scripting (XSS). Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of another user.
This issue affects HCL Notes: Release 12.0.2FP5HF8 on Linux 4.18.0-553.52.1.El8_10.X64_64#1.
Weakness: CWE-79
Which versions are affected by CVE-2026-9007?
How do I fix CVE-2026-9007?
No fix has been published for CVE-2026-9007 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-9007 being exploited?
There is no known exploitation of CVE-2026-9007 in the wild and no public exploit code.
Sources
Also known as GHSA-3fq3-hrxw-v9q9.