high CVSS 7.1 EPSS 0.59%

CVE-2025-24019·PHP vulnerability

YesWiki is a wiki system written in PHP. In versions up to and including 4.4.5, it is possible for any authenticated user, through the use of the filemanager to delete any file owned by the user running the FastCGI Process Manager (FPM) on the host without any limitation on the filesystem's scope. This vulnerability allows any authenticated user to arbitrarily remove content from the Wiki resulting in partial loss of data and defacement/deterioration of the website. In the context of a container installation of YesWiki without any modification, the `yeswiki` files (for example .php) are not owned by the same user (root) as the one running the FPM process (www-data). However in a standard installation, www-data may also be the owner of the PHP files, allowing a malicious user to completely cut the access to the wiki by deleting all important PHP files (like index.php or core files of YesWiki). Version 4.5.0 contains a patch for this issue.

Severity
high
Software
PHP
Fixed in
4.5.0
Published

How likely is exploitation

FIRST's Exploit Prediction Scoring System puts the probability of this CVE being exploited in the next 30 days at 0.59% — higher than 45% of all published CVEs. EPSS is an independent forecast of exploitation, not a severity rating: it says nothing about how much damage a successful attack does, which is what a CVSS score measures.

Read the two together. CVE-2025-24019 scores 7.1 on CVSS, so a successful attack would be serious — but at 0.59%, almost nobody is currently attempting it. That is a different situation from a flaw under mass exploitation, and it is usually the difference between patching on your next maintenance window and patching tonight.

Affected versions

Until: 4.5.0

Fixed in: 4.5.0

How to fix this CVE

Upgrade YesWiki to version 4.5.0 or later to patch an authenticated file deletion vulnerability in the filemanager component. If running YesWiki on a standard server configuration where the web server user (www-data) owns PHP files, this vulnerability could allow a malicious authenticated user to delete critical application files and render the wiki inaccessible. Update PHP and YesWiki packages immediately to mitigate the risk of data loss and service disruption.

sudo dnf check-update php && sudo dnf upgrade php php-common php-cli php-fpm

Defensia detects this vulnerability

WAF mitigation (if patching is not yet possible)

Add this rule to your WAF to block exploitation attempts while you schedule the patch. 

Implement WAF rules to restrict access to the filemanager endpoint to trusted IPs or add rate limiting to /filemanager requests. Additionally, require multi-factor authentication for users accessing filemanager functionality and log all file deletion operations for audit trails.

How to check if you are affected

  1. Check the installed YesWiki version by examining the release file: grep -r 'version' /var/www/yeswiki/ | grep -i release or check the admin panel version information
  2. Verify PHP ownership of application files: ls -la /var/www/yeswiki/*.php | awk '{print $3}' to identify if www-data or root owns critical files
  3. Review web server access logs for suspicious filemanager requests: grep -i 'filemanager' /var/log/apache2/access.log or /var/log/nginx/access.log
  4. Confirm the patch by checking YesWiki version is 4.5.0 or later: grep -r '4\.5\.0' /var/www/yeswiki/ or check the commit hash 3ddd833d22703caf9025659eb174f7765df7147c in the repository

FAQ

What is CVE-2025-24019?

CVE-2025-24019 is a file deletion vulnerability in YesWiki's filemanager that allows any authenticated user to delete files owned by the FastCGI Process Manager (FPM) user, potentially including critical PHP application files. This could result in complete application failure or data loss depending on server configuration.

Is CVE-2025-24019 being actively exploited?

No, CVE-2025-24019 is not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog, and no public exploits are currently available. However, the vulnerability requires only authenticated access, making it a risk in environments with multiple users.

What versions of YesWiki are affected by CVE-2025-24019?

All YesWiki versions up to and including 4.4.5 are affected. YesWiki version 4.5.0 and later contain the security patch.

How do I check if my server is vulnerable to CVE-2025-24019?

Identify your YesWiki version using: cat /var/www/yeswiki/includes/Version.php or check the admin panel. If the version is 4.4.5 or earlier, you are vulnerable. Additionally, check file ownership with: ls -la /var/www/yeswiki/*.php to see if www-data owns PHP files.

Does Defensia detect CVE-2025-24019?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If YesWiki is installed on a monitored server, CVE-2025-24019 will appear in your dashboard with remediation steps.

Related PHP CVEs

CVE-2026-39337CVSS 10ChurchCRM is an open-source church management system. Prior to 7.1.0, critical pre-authentication remote code execution vulnerability in ChurchCRM's setup wizard allows unauthenticated attackers to inject arbitrary PHP code during the initial installation process, leading to complete server compromise. The "$dbPassword" variable is not sanitized. This vulnerability exists due to an incomplete fix for CVE-2025-62521. This vulnerability is fixed in 7.1.0.
CVE-2026-28289CVSS 10FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. A patch bypass vulnerability for CVE-2026-27636 in FreeScout 1.8.206 and earlier allows any authenticated user with file upload permissions to achieve Remote Code Execution (RCE) on the server by uploading a malicious .htaccess file using a zero-width space character prefix to bypass the security check. The vulnerability exists in the sanitizeUploadedFileName() function in app/Http/Helper.php. The function contains a Time-of-Check to Time-of-Use (TOCTOU) flaw where the dot-prefix check occurs before sanitization removes invisible characters. This vulnerability is fixed in 1.8.207.
CVE-2025-46348CVSS 10YesWiki is a wiki system written in PHP. Prior to version 4.5.4, the request to commence a site backup can be performed and downloaded without authentication. The archives are created with a predictable filename, so a malicious user could create and download an archive without being authenticated. This could result in a malicious attacker making numerous requests to create archives and fill up the file system, or by downloading the archive which contains sensitive site information. This issue has been patched in version 4.5.4.
CVE-2024-5932CVSS 10The GiveWP – Donation Plugin and Fundraising Platform plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.14.1 via deserialization of untrusted input from the 'give_title' parameter. This makes it possible for unauthenticated attackers to inject a PHP Object. The additional presence of a POP chain allows attackers to execute code remotely, and to delete arbitrary files.
CVE-2025-47916CVSS 10Invision Community 5.0.0 before 5.0.7 allows remote code execution via crafted template strings to themeeditor.php. The issue lies within the themeeditor controller (file: /applications/core/modules/front/system/themeeditor.php), where a protected method named customCss can be invoked by unauthenticated users. This method passes the value of the content parameter to the Theme::makeProcessFunction() method; hence it is evaluated by the template engine. Accordingly, this can be exploited by unauthenticated attackers to inject and execute arbitrary PHP code by providing crafted template strings.

References

Track CVEs across your fleet automatically

Defensia scans your Linux servers and tells you exactly which ones are running vulnerable versions — including CVE-2025-24019. Free for 1 server.

Get started free