CVE-2026-62378 RustFS Console: Critical Stored XSS in Preview Modal leading to Administrative Account Takeover
Attackers can execute stored XSS via malicious PDF previews in the RustFS console, stealing administrator credentials and taking over accounts.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-62378?
CVE-2026-62378 is a critical cross-site scripting vulnerability in rustfs console, published on 15 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
RustFS Console is a web management console for the RustFS distributed file system. From 0.1.7 until 0.1.10, the RustFS Console components/object/preview-modal.tsx and components/object/pdf-viewer.tsx extension-based PDF preview path can render HTML content uploaded as .pdf, allowing stored cross-site scripting in the management console and exposure of administrator AccessKeyId, SecretAccessKey, and SessionToken values. This is caused by a regression of CVE-2026-27822. This vulnerability is fixed in 0.1.10.
Weakness: CWE-79
Which versions are affected by CVE-2026-62378?
How do I fix CVE-2026-62378?
No fix has been published for CVE-2026-62378 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-2026-62378 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-62378 exists.
Sources
Also known as GHSA-7gcx-wg4x-q9x6.