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USN-8309-1: libssh2 vulnerability

🗓️ 26 May 2026 18:27:23Reported by UbuntuType 
ubuntu
 ubuntu
🔗 ubuntu.com👁 13 Views

Libssh2 flaw mishandles username and password lengths in authentication, enabling denial of service.

Related
Packages
OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu24.04amd64libssh2-1-dev1.11.0-4.1ubuntu0.24.04.1libssh2-1-dev_1.11.0-4.1ubuntu0.24.04.1_amd64.deb
Ubuntu24.04arm64libssh2-1-dev1.11.0-4.1ubuntu0.24.04.1libssh2-1-dev_1.11.0-4.1ubuntu0.24.04.1_arm64.deb
Ubuntu24.04armhflibssh2-1-dev1.11.0-4.1ubuntu0.24.04.1libssh2-1-dev_1.11.0-4.1ubuntu0.24.04.1_armhf.deb
Ubuntu24.04i386libssh2-1-dev1.11.0-4.1ubuntu0.24.04.1libssh2-1-dev_1.11.0-4.1ubuntu0.24.04.1_i386.deb
Ubuntu24.04ppc64ellibssh2-1-dev1.11.0-4.1ubuntu0.24.04.1libssh2-1-dev_1.11.0-4.1ubuntu0.24.04.1_ppc64el.deb
Ubuntu24.04riscv64libssh2-1-dev1.11.0-4.1ubuntu0.24.04.1libssh2-1-dev_1.11.0-4.1ubuntu0.24.04.1_riscv64.deb
Ubuntu24.04s390xlibssh2-1-dev1.11.0-4.1ubuntu0.24.04.1libssh2-1-dev_1.11.0-4.1ubuntu0.24.04.1_s390x.deb
Ubuntu25.10amd64libssh2-1-dev1.11.1-1ubuntu0.25.10.1libssh2-1-dev_1.11.1-1ubuntu0.25.10.1_amd64.deb
Ubuntu25.10amd64v3libssh2-1-dev1.11.1-1ubuntu0.25.10.1libssh2-1-dev_1.11.1-1ubuntu0.25.10.1_amd64v3.deb
Ubuntu25.10arm64libssh2-1-dev1.11.1-1ubuntu0.25.10.1libssh2-1-dev_1.11.1-1ubuntu0.25.10.1_arm64.deb
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26 May 2026 18:27Current
5.8Medium risk
Vulners AI Score5.8
CVSS 46.9
CVSS 3.17.3
CVSS 27.5
CVSS 37.3
EPSS0.00075
SSVC
13