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[USN-8670-1] curl vulnerability

Posted on 24 August 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8670-1
August 24, 2026

curl vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS

Summary:

curl could be made to expose sensitive information.

Software Description:
- curl: HTTP, HTTPS, and FTP client and client libraries

Details:

Joshua Rogers discovered that curl incorrectly handled reusing connections
when client certificate settings changed. This could result in the wrong
client certificates being used, contrary to expectations.

Update instructions:

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

Ubuntu 24.04 LTS
curl 8.5.0-2ubuntu10.13
libcurl3t64-gnutls 8.5.0-2ubuntu10.13
libcurl4-gnutls-dev 8.5.0-2ubuntu10.13
libcurl4-openssl-dev 8.5.0-2ubuntu10.13
libcurl4t64 8.5.0-2ubuntu10.13

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

References:
https://ubuntu.com/security/notices/USN-8670-1
CVE-2026-8932

Package Information:
https://launchpad.net/ubuntu/+source/curl/8.5.0-2ubuntu10.13

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