CVE-2025-12821 NewsBlogger <= 0.2.5.6 - 0.2.5.9 - Cross-Site Request Forgery to Arbitrary Plugin Installation
Attackers can trick administrators into installing arbitrary plugins, leading to remote code execution on WordPress sites using the NewsBlogger theme.
- 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-2025-12821?
CVE-2025-12821 is a high-severity vulnerability in spicethemes NewsBlogger, published on 19 Feb 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 NewsBlogger theme for WordPress is vulnerable to Cross-Site Request Forgery in versions 0.2.5.6 to 0.2.5.9. This is due to missing or incorrect nonce validation on the newsblogger_install_and_activate_plugin() function. This makes it possible for unauthenticated attackers to upload arbitrary files and achieve remote code execution via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. This is due to a reverted fix of CVE-2025-1305.
Weakness: CWE-352
Which versions are affected by CVE-2025-12821?
How do I fix CVE-2025-12821?
No fix has been published for CVE-2025-12821 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-12821 being exploited?
There is no known exploitation of CVE-2025-12821 in the wild and no public exploit code.
Sources
Also known as GHSA-w3jh-c422-596p.