CVE-2026-44709

pamusb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, pamusb-pinentry reads the PINENTRYFALLBACKAPP environment variable and executes it directly without any validation. Any process that can set environment variables before pamusb-pinentry is invoked ca...

CVE-2026-44709 pam_usb: PINENTRY_FALLBACK_APP environment variable allows arbitrary command execution

pamusb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, pamusb-pinentry reads the PINENTRYFALLBACKAPP environment variable and executes it directly without any validation. Any process that can set environment variables before pamusb-pinentry is invoked ca...

CVE-2026-44709

CVE-2026-44709 affects pam_usb: prior to version 0.8.7, the pamusb-pinentry component reads the PINENTRY_FALLBACK_APP environment variable and executes it directly without validation. Any process that can set environment variables before pamusb-pinentry runs can point PINENTRY_FALLBACK_APP to an ...