CVE-2024-27090

CVE-2024-27090 is a medium-severity security vulnerability in decidim (rubygems), affecting versions < 0.27.6. It is fixed in 0.27.6.

Summary

Workarounds

Disallow access through your web server to the URLs finished with /embed.html

Impact

If an attacker can infer the slug or URL of an unpublished or private resource, and this resource can be embedded (such as a Participatory Process, an Assembly, a Proposal, a Result, etc), then some data of this resource could be accessed.

CVE-2024-27090 has a CVSS score of 5.3 (Medium). The vector is network-reachable, no 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 (0.27.6); upgrading removes the vulnerable code path.

Affected versions

decidim (< 0.27.6)

Security releases

decidim → 0.27.6 (rubygems)

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

version 0.27.6

https://github.com/decidim/decidim/commit/1756fa639ef393ca8e8bb16221cab2e2e7875705

Frequently Asked Questions

  1. What is CVE-2024-27090? CVE-2024-27090 is a medium-severity security vulnerability in decidim (rubygems), affecting versions < 0.27.6. It is fixed in 0.27.6.
  2. How severe is CVE-2024-27090? CVE-2024-27090 has a CVSS score of 5.3 (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.
  3. Which versions of decidim are affected by CVE-2024-27090? decidim (rubygems) versions < 0.27.6 is affected.
  4. Is there a fix for CVE-2024-27090? Yes. CVE-2024-27090 is fixed in 0.27.6. Upgrade to this version or later.
  5. Is CVE-2024-27090 exploitable, and should I be worried? Whether CVE-2024-27090 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-2024-27090 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-2024-27090? Upgrade decidim to 0.27.6 or later.

Other vulnerabilities in decidim

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