CVE Alert: CVE-2025-55203

Vulnerability Summary: CVE-2025-55203

Plane is open-source project management software. Prior to version 0.28.0, a stored cross-site scripting (XSS) vulnerability exists in the description_html field of Plane. This flaw allows an attacker to inject malicious JavaScript code that is stored and later executed in other users’ browsers. The description_html field is not properly sanitized or escaped. An attacker can submit crafted JavaScript payloads that are saved in the application’s database. When another user views the affected content, the injected code executes in their browser, running in the application’s context and bypassing standard security protections. Successful exploitation can lead to session hijacking, theft of sensitive information, or forced redirection to malicious sites. The vulnerability can also be chained with CSRF attacks to perform unauthorized actions, or leveraged to distribute malware and exploit additional browser vulnerabilities. This issue has been patched in version 0.28.0.

Affected Endpoints:

No affected endpoints listed.

Published Date:

8/15/2025, 3:15:32 PM

⚠️ CVSS Score:

Exploit Status:

Not Exploited

References:

• https://drive.google.com/file/d/1lQzQJ9Eun6xmcxyyAkr5ORyIrfw9ys5w/view?usp=sharing
• https://github.com/makeplane/plane/security/advisories/GHSA-rwjc-xhh3-m9m9

Recommended Action:

No proposed action available. Please refer to vendor documentation for updates.

---