Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 463
Alerts This Week
Warning Icon 1 463

Ubuntu 26.04 LTS ruby-addressable Critical Denial of Service USN-8515-1

ubuntu
Calendar Grey July 7, 2026
Dist Ubuntu Esm H88
Update Ubuntu's ruby-addressable package to patch critical denial of service vulnerability affecting multiple Ubuntu LTS versions.
Addressable could be made to consume resources and cause a denial of service if it received specially crafted input.

Summary

Addressable could be made to consume resources and cause a denial of

service if it received specially crafted input.

Software Description:

- ruby-addressable: Addressable is an alternative implementation to the URI implementation that is part of Ruby's standard library

Details:

It was discovered that Addressable incorrectly handled certain URI

templates, generating regular expressions vulnerable to catastrophic

backtracking. An attacker could use this issue to craft a URI that, when matched

against a vulnerable template, causes excessive resource consumption,

leading to a denial of service.

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu resource consumption ruby-addressable

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
  ruby-addressable                2.8.7-2ubuntu0.26.04.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 24.04 LTS
  ruby-addressable                2.8.5-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  ruby-addressable                2.8.0-3ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  ruby-addressable                2.7.0-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  ruby-addressable                2.5.2-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  ruby-addressable                2.3.8-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-8515-1

CVE-2026-35611

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8515-1

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu resource consumption ruby-addressable

Package Information

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.