CVE-2026-44655

CVE-2026-44655 is a high-severity cross-site scripting (XSS) vulnerability in mantisbt/mantisbt (composer), affecting versions >= 1.3.0, <= 2.28.1. It is fixed in 2.28.2.

Summary

Unescaped Project Name allows an attacker that can set it (which typically requires manager or administrator access level) to inject HTML in Move Attachments admin page.

Workarounds

None

Impact

Cross-site scripting (XSS).
This is mitigated by Content Security Policy which restricts scripts execution.

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

mantisbt/mantisbt (>= 1.3.0, <= 2.28.1)

Security releases

mantisbt/mantisbt → 2.28.2 (composer)

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.

See it in your environment

Remediation advice

  • 5cb4b469295889f5d2b01677c9bf82c143e0fdaa

Frequently Asked Questions

  1. What is CVE-2026-44655? CVE-2026-44655 is a high-severity cross-site scripting (XSS) vulnerability in mantisbt/mantisbt (composer), affecting versions >= 1.3.0, <= 2.28.1. It is fixed in 2.28.2. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.
  2. Which versions of mantisbt/mantisbt are affected by CVE-2026-44655? mantisbt/mantisbt (composer) versions >= 1.3.0, <= 2.28.1 is affected.
  3. Is there a fix for CVE-2026-44655? Yes. CVE-2026-44655 is fixed in 2.28.2. Upgrade to this version or later.
  4. Is CVE-2026-44655 exploitable, and should I be worried? Whether CVE-2026-44655 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
  5. What actually determines whether CVE-2026-44655 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.
  6. How do I fix CVE-2026-44655? Upgrade mantisbt/mantisbt to 2.28.2 or later.

Other vulnerabilities in mantisbt/mantisbt

CVE-2026-44657CVE-2026-44655CVE-2026-42071CVE-2026-42070CVE-2026-41897

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