Summary
Workarounds
Even though the attacker might be able to inject code into the HTML, the Weblate's strict CSP should mitigate the risks.
Acknowlegement
Michal Čihař has identified and fixed this vulnerability.
Impact
The Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes.
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-2026-44264 has a CVSS score of 4.3 (Medium). The vector is network-reachable, low privileges required, and no user interaction. 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 (5.17.1); upgrading removes the vulnerable code path.
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
Frequently Asked Questions
- What is CVE-2026-44264? CVE-2026-44264 is a medium-severity cross-site scripting (XSS) vulnerability in weblate (pip), affecting versions < 5.17.1. It is fixed in 5.17.1. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.
- How severe is CVE-2026-44264? CVE-2026-44264 has a CVSS score of 4.3 (Medium). 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.
- Which versions of weblate are affected by CVE-2026-44264? weblate (pip) versions < 5.17.1 is affected.
- Is there a fix for CVE-2026-44264? Yes. CVE-2026-44264 is fixed in 5.17.1. Upgrade to this version or later.
- Is CVE-2026-44264 exploitable, and should I be worried? Whether CVE-2026-44264 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-2026-44264 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-2026-44264? Upgrade
weblateto 5.17.1 or later.