CVE-2025-65203 Security feature bypass in n/a
KeePassXC-Browser bypasses CSP and sandbox restrictions, allowing attackers to steal credentials from autofilled forms in sandboxed documents.
- 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-2025-65203?
CVE-2025-65203 is a high-severity vulnerability in n/a, published on 17 Dec 2025. 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
KeePassXC-Browser thru 1.9.9.2 autofills or prompts to fill stored credentials into documents rendered under a browser-enforced CSP directive and iframe attribute sandbox, allowing attacker-controlled script in the sandboxed document to access populated form fields and exfiltrate credentials.
Which versions are affected by CVE-2025-65203?
It affects 1 product.
Products include Keepassxc Keepassxc-Browser.
How do I fix CVE-2025-65203?
No fix has been published for CVE-2025-65203 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-65203 being exploited?
There is no known exploitation of CVE-2025-65203 in the wild and no public exploit code.
Sources
Also known as GHSA-86gj-qj6h-cwmx.