{"id":"UBUNTU-CVE-2026-34181","details":"Issue Summary: The PKCS#12 file processing fails to perform sufficient input validation for files that use Password-Based Message Authentication Code 1 (PBMAC1) integrity mechanism allowing a certificate and private key forgery. Impact Summary: An attacker impersonating a user can cause a service reading PKCS#12 files to accept forged certificates and private keys with a 1 in 256 probability. If a service accepting PKCS#12 files is using passwords for authenticating the received files, the attacker can create unencrypted PKCS#12 files that use PBMAC1 authentication that specifies an HMAC key of only one byte, allowing them to craft a file that will be accepted with a 1 in 256 probability. That would then cause the service to accept a certificate and private key controlled by the attacker. The FIPS modules are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.","modified":"2026-09-15T08:31:34.063489271Z","published":"2026-06-09T00:00:00Z","related":["USN-8414-1"],"upstream":["CVE-2026-34181"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-34181"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-34181"},{"type":"REPORT","url":"https://openssl-library.org/news/secadv/20260609.txt"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8414-1"}],"affected":[{"package":{"name":"nodejs","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/nodejs?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["12.22.5~dfsg-5ubuntu1","12.22.7~dfsg-2ubuntu1","12.22.7~dfsg-2ubuntu3","12.22.9~dfsg-1ubuntu2","12.22.9~dfsg-1ubuntu3","12.22.9~dfsg-1ubuntu3.1","12.22.9~dfsg-1ubuntu3.2","12.22.9~dfsg-1ubuntu3.3","12.22.9~dfsg-1ubuntu3.4","12.22.9~dfsg-1ubuntu3.5","12.22.9~dfsg-1ubuntu3.6","12.22.9~dfsg-1ubuntu3.6+esm2"],"ecosystem_specific":{"priority_reason":"OpenSSL 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