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Ubuntu 24.04 8409-1 Uriparser Important Denial of Service

ubuntu
Calendar Grey June 10, 2026
Dist Ubuntu Esm H88
Emergency update for Ubuntu addressing a critical uriparser issue that could cause crashing and denial of service.
uriparser could be made to crash if it received specially crafted input.

Summary

uriparser could be made to crash if it received specially crafted

input.

Software Description:

- uriparser: Strictly RFC 3986 compliant URI parsing library

Details:

It was discovered that uriparser incorrectly handled certain URI strings.

An attacker could possibly use this issue to cause uriparser to crash,

resulting in a denial of service.

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu important software issue uriparser

Update Instructions

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

Ubuntu 24.04 LTS
  liburiparser1                   0.9.7+dfsg-2ubuntu0.1~esm2
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  liburiparser1                   0.9.6+dfsg-1ubuntu0.1~esm2
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  liburiparser1                   0.9.3-2ubuntu0.1~esm4
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  liburiparser1                   0.8.4-1+deb9u2ubuntu0.1+esm2
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  liburiparser1                   0.8.4-1ubuntu0.16.04.1~esm5
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  liburiparser1                   0.7.5-1ubuntu2+esm5
                                  Available with Ubuntu Pro

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

References

https://ubuntu.com/security/notices/USN-8409-1

CVE-2025-67899

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8409-1

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu important software issue uriparser

Package Information

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