Platform
wordpress
Component
newsblogger
Fixed in
0.2.7
CVE-2025-12821 is a Cross-Site Request Forgery (CSRF) vulnerability discovered in the NewsBlogger WordPress theme. This flaw allows unauthenticated attackers to potentially upload arbitrary files and achieve remote code execution (RCE) by tricking a site administrator into performing malicious actions. The vulnerability affects versions 0.2.5.6 through 0.2.6.1 of the theme, and a fix is expected in a future release.
The primary impact of CVE-2025-12821 is the potential for remote code execution. An attacker could craft a malicious link or form that, when clicked by a site administrator, would trigger the upload of a file containing malicious code. This code could then be executed on the server, granting the attacker control over the WordPress site. The vulnerability stems from missing or incorrect nonce validation within the newsbloggerinstallandactivateplugin() function, allowing forged requests to bypass security checks. This vulnerability is a reversion of a previous fix for CVE-2025-1305, highlighting the importance of thorough regression testing.
CVE-2025-12821 was publicly disclosed on 2026-02-18. No public proof-of-concept (PoC) code has been released at the time of writing, but the vulnerability's nature (CSRF leading to RCE) makes it a high-priority target. It is not currently listed on the CISA KEV catalog. The vulnerability's similarity to the previously addressed CVE-2025-1305 suggests that attackers may be actively seeking to exploit it.
Exploit Status
EPSS
0.06% (18% percentile)
CISA SSVC
CVSS Vector
The immediate mitigation for CVE-2025-12821 is to upgrade to a patched version of the NewsBlogger theme once available. Until a patch is released, administrators should implement strict input validation and nonce verification on all plugin installation and activation functions. Consider using a WordPress security plugin that provides CSRF protection. Web Application Firewalls (WAFs) configured to detect and block suspicious requests targeting the vulnerable function can also provide an additional layer of defense. Regularly review WordPress plugin installations and remove any unused or outdated plugins.
No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
Vulnerability analysis and critical alerts directly to your inbox.
CVE-2025-12821 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the NewsBlogger WordPress theme, allowing attackers to potentially upload files and achieve remote code execution.
You are affected if your WordPress site uses the NewsBlogger theme in versions 0.2.5.6 through 0.2.6.1. Upgrade to a patched version as soon as it's available.
Upgrade to a patched version of the NewsBlogger theme. Until a patch is released, implement nonce validation and consider using a WordPress security plugin.
While no public exploits are currently known, the vulnerability's potential for RCE makes it a likely target for attackers.
Check the NewsBlogger theme developer's website or WordPress plugin repository for updates and security advisories.
Upload your dependency file and we'll tell you instantly if this and other CVEs hit you.
Upload your dependency file and we'll tell you instantly if this and other CVEs hit you.