CVE-2026-16570 NextScripts: Social Networks Auto-Poster < 4.4.8 - Reflected XSS via Facebook OAuth Callback
Attackers can execute arbitrary scripts in the context of logged-in administrators via a crafted link, potentially leading to account takeover.
- 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-2026-16570?
CVE-2026-16570 is a high-severity cross-site scripting vulnerability in Unknown NextScripts: Social Networks Auto-Poster, published on 19 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
The NextScripts: Social Networks Auto-Poster WordPress plugin before 4.4.8 does not escape some of the query-string parameters it reflects back on one of its admin pages, allowing attackers to perform Reflected Cross-Site Scripting attacks against logged-in users such as administrators who are tricked into opening a crafted link.
Weakness: CWE-79
Which versions are affected by CVE-2026-16570?
How do I fix CVE-2026-16570?
No fix has been published for CVE-2026-16570 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-2026-16570 being exploited?
There is no known exploitation of CVE-2026-16570 in the wild and no public exploit code.
Sources
Also known as GHSA-qvfr-x6x6-r99q.