========================================================================== Ubuntu Security Notice USN-8290-1 May 21, 2026
node-path-to-regexp vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary:
Path-to-Regexp could be made to crash if it received specially crafted
network traffic.
Software Description:
- node-path-to-regexp: Turn a path string such as /user/:name into a regular
expression.
Details:
It was discovered that Path-to-Regexp incorrectly handled route patterns
containing multiple named parameters separated by non-delimiter characters
such as hyphens. An attacker could possibly use this issue to cause a denial
of service via catastrophic backtracking in the generated regular expressions.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 24.04 LTS
node-path-to-regexp 6.2.1-1ubuntu0.1~esm1
Available with Ubuntu Pro
Ubuntu 22.04 LTS
node-path-to-regexp 6.2.0-2ubuntu0.1~esm1
Available with Ubuntu Pro
Ubuntu 20.04 LTS
node-path-to-regexp 6.1.0-2ubuntu0.1~esm1
Available with Ubuntu Pro
Ubuntu 18.04 LTS
node-path-to-regexp 1.0.1-1ubuntu0.18.04.1~esm1
Available with Ubuntu Pro
Ubuntu 16.04 LTS
node-path-to-regexp 1.0.1-1ubuntu0.16.04.1~esm1
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8290-1
CVE-2024-45296
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