CVE-2026-85682 Security feature bypass in YOP Poll
Unauthenticated attackers can steal admin REST nonces via postMessage to take over administrator accounts in YOP Poll.
- 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-2026-85682?
CVE-2026-85682 is a high-severity vulnerability in yourownprogrammer YOP Poll, published on 24 Sep 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 YOP Poll plugin for WordPress is vulnerable to Origin Validation Error in all versions up to, and including, 7.0.10. This is due to the plugin transmitting a wp_rest nonce to window.opener via postMessage() with a wildcard targetOrigin. This makes it possible for unauthenticated attackers to steal a REST nonce scoped to a logged-in Administrator and use it to change the Administrator's email address and password, resulting in full account takeover. The Administrator must open an attacker-controlled page in order to exploit this vulnerability.
Weakness: CWE-346
Which versions are affected by CVE-2026-85682?
How do I fix CVE-2026-85682?
No fix has been published for CVE-2026-85682 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-85682 being exploited?
There is no known exploitation of CVE-2026-85682 in the wild and no public exploit code.
Sources
Also known as GHSA-mm9j-887x-mwhq.