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libssh2: libssh2: Denial of Service via crafted SSH_MSG_EXT_INFO message

🗓️ 25 Jun 2026 13:02:46Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 9 Views

Libssh2 denial of service: rogue server can freeze clients during handshake by malformed extension information message, exhausting CPU.

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Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Hardened Imagesanyaarch64libssh21.11.1-8.hum1libssh2-1.11.1-8.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64libssh21.11.1-8.hum1libssh2-1.11.1-8.hum1.x86_64.rpm
Red Hat Hardened Imagesanynoarchlibssh2-docs1.11.1-8.hum1libssh2-docs-1.11.1-8.hum1.noarch.rpm

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18 Aug 2026 15:29Current
6.9Medium risk
Vulners AI Score6.9
CVSS 3.15.9 - 7.5
CVSS 48.2
EPSS0.00918
SSVC
9