CVE-2021-25955

In Dolibarr ERP CRM, WYSIWYG Editor module, v2.8.1 to v13.0.2 are affected by a stored XSS vulnerability that allows low privileged application users to store malicious scripts in the Private Note field at /adherents/note.php?id=1 endpoint. These scripts are executed in a victim’s browser when they open the page containing the vulnerable field. In the worst case, the victim who inadvertently triggers the attack is a highly privileged administrator. The injected scripts can extract the Session ID, which can lead to full Account takeover of the admin and due to other vulnerability (Improper Access Control on Private notes) a low privileged user can update the private notes which could lead to privilege escalation.

Untrusted input is rendered as active markup in a victim's browser, which can run script in their session. Typical impact: session or credential theft, and actions taken as the user.

CVE-2021-25955 has a CVSS score of 9.0 (Critical). The vector is network-reachable, low privileges required, and user interaction required. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (14.0.0); upgrading removes the vulnerable code path.

Kodem intelligence

1. What is CVE-2021-25955? CVE-2021-25955 is a critical-severity cross-site scripting (XSS) vulnerability in dolibarr/dolibarr (composer), affecting versions >= 2.8.1, <= 13.0.2. It is fixed in 14.0.0. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.
2. How severe is CVE-2021-25955? CVE-2021-25955 has a CVSS score of 9.0 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of dolibarr/dolibarr are affected by CVE-2021-25955? dolibarr/dolibarr (composer) versions >= 2.8.1, <= 13.0.2 is affected.
4. Is there a fix for CVE-2021-25955? Yes. CVE-2021-25955 is fixed in 14.0.0. Upgrade to this version or later.
5. Is CVE-2021-25955 exploitable, and should I be worried? Whether CVE-2021-25955 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2021-25955 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2021-25955? Upgrade dolibarr/dolibarr to 14.0.0 or later.

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