CVE-2026-44667 Faction: Stored XSS in Remediation Verification Attachment Filename Preview Rendering
Attackers can execute arbitrary JavaScript in victim browsers via stored XSS in attachment filenames, potentially compromising privileged 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-2026-44667?
CVE-2026-44667 is a high-severity cross-site scripting vulnerability in factionsecurity faction, published on 26 May 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
FACTION is a PenTesting Report Generation and Collaboration Framework. Prior to 1.8.3, Faction is vulnerable to stored cross-site scripting (XSS) via attachment filenames in remediation verification file preview flows. User-supplied filename values are persisted and then rendered into HTML and attribute contexts without output encoding, allowing attacker-controlled JavaScript to execute in the browser of any user who opens the affected verification/remediation views. Because the payload is stored server-side and rendered to other users, exploitation is persistent and can impact privileged accounts. This vulnerability is fixed in 1.8.3.
Weakness: CWE-79
Which versions are affected by CVE-2026-44667?
How do I fix CVE-2026-44667?
No fix has been published for CVE-2026-44667 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-2026-44667 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44667 exists.
Sources
Also known as GHSA-x3fm-rrxj-rg66.