Home / mailings

PDF

[USN-8670-3] curl vulnerability

Posted on 09 September 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8670-3
September 08, 2026

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

- Ubuntu 26.04 LTS

Summary:

curl could be made to expose sensitive information.

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

Details:

USN-8670-1 fixed a vulnerability in curl. This update provides the
corresponding update for Ubuntu 26.04 LTS.

Original advisory 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 26.04 LTS
curl 8.18.0-1ubuntu2.5
libcurl3t64-gnutls 8.18.0-1ubuntu2.5
libcurl4-gnutls-dev 8.18.0-1ubuntu2.5
libcurl4-openssl-dev 8.18.0-1ubuntu2.5
libcurl4t64 8.18.0-1ubuntu2.5

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

References:
https://ubuntu.com/security/notices/USN-8670-3
https://ubuntu.com/security/notices/USN-8670-2
https://ubuntu.com/security/notices/USN-8670-1
CVE-2026-8932

Package Information:
https://launchpad.net/ubuntu/+source/curl/8.18.0-1ubuntu2.5

--===============3546000307479860688==Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature

 

TOP