Ubuntu Security Notices
Developers issue an Ubuntu Security Notice when a security issue is fixed in an official Ubuntu package. You can find additional guidance for high-profile vulnerabilities in the Ubuntu Vulnerability Knowledge Base section.
To report a security vulnerability in an Ubuntu package, please contact the Security Team.
The Security Team also produces OVAL files for each Ubuntu release. These are an industry-standard machine-readable format dataset that contain details of all known security vulnerabilities and fixes relevant to the Ubuntu release, and can be used to determine whether a particular patch is appropriate. OVAL files can also be used to audit a system to check whether the latest security fixes have been applied.
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USN ID, name, description or CVE ID contains
1 - 10 of 3277 results
12 November 2026
Several security issues were fixed in Apache HTTP Server.
- Ubuntu 26.10 ,
- 26.04 LTS,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2026-42356, CVE-2026-119618, CVE-2026-109163 + 2 others
12 November 2026
Debian-LAN could allow users to change the Kerberos passwords of other users.
- Ubuntu 16.04 LTS
CVE ID
12 November 2026
signing-party could be made to run programs as your login if it processed a specially crafted OpenPGP key.
- Ubuntu 18.04 LTS,
- 16.04 LTS
CVE ID
12 November 2026
Ruby OpenID could be made to connect to arbitrary servers.
- Ubuntu 18.04 LTS,
- 16.04 LTS
CVE ID
12 November 2026
Radicale could be made to expose sensitive information over the network.
- Ubuntu 16.04 LTS
CVE ID
12 November 2026
gevent could allow unintended access to network services.
- Ubuntu 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
12 November 2026
pngquant could be made to crash or run programs as your login if it opened a specially crafted file.
- Ubuntu 16.04 LTS
CVE ID
12 November 2026
OpenConnect could be made to crash or run programs if it received specially crafted network traffic.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
12 November 2026
libsolv could be made to crash if it opened a specially crafted file.
- Ubuntu 18.04 LTS,
- 16.04 LTS
CVE ID
12 November 2026
JGraphX could be made to expose sensitive information if it opened a specially crafted file.
- Ubuntu 18.04 LTS,
- 16.04 LTS
CVE ID
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