Summary
The task preview component creates a unparented div. The div's innerHtml is set to the unescaped description of the task
Details
In the TaskGlanceTooltip.vue it temporarily creates a div and sets the innerHtml to the description here. Since there is no escaping on either the server or client side, a malicious user can share a project, create a malicious task, and cause an XSS on hover.
PoC
- Create a project
- Create a task with any description
- Use the api to update the task with a description containing unescaped HTML (ex:
<img src=x onerror="alert(localStorage.getItem('token'))"> - Share the project with any permission level
- Send malicious project to user and ask them to view task
Impact
Any user on an instance can cause an XSS on another
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.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
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. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
Remediation advice
In the interim: Validate and encode untrusted input before rendering it as HTML. Applying a Content Security Policy reduces the impact if encoding is bypassed.
Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
Frequently Asked Questions
- What is CVE-2026-25935? CVE-2026-25935 is a high-severity cross-site scripting (XSS) vulnerability in code.vikunja.io/api (go), affecting versions <= 0.24.6. No fixed version is listed yet. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.
- Which versions of code.vikunja.io/api are affected by CVE-2026-25935? code.vikunja.io/api (go) versions <= 0.24.6 is affected.
- Is there a fix for CVE-2026-25935? No fixed version is listed for CVE-2026-25935 yet. Monitor the advisory for updates and apply mitigations in the interim.
- Is CVE-2026-25935 exploitable, and should I be worried? Whether CVE-2026-25935 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
- What actually determines whether CVE-2026-25935 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.
- How do I fix CVE-2026-25935? No fixed version is listed yet. In the interim: Validate and encode untrusted input before rendering it as HTML. Applying a Content Security Policy reduces the impact if encoding is bypassed.