{"id":"CVE-2026-81719","aliases":["PYSEC-2026-3802","GHSA-587j-4r3v-cm2c"],"title":"openssl_encrypt before 1.4.9 executes untrusted third-party plugins with insufficient controls: the plugin signature policy defaulted to …","summary":"openssl_encrypt before 1.4.9 executes untrusted third-party plugins with insufficient controls: the plugin signature policy defaulted to WARN, so an unsigned/unverifiable non-built-in plugin was compiled and executed in the host process …","severity":"none","vendor":"openssl-encrypt","product":"openssl-encrypt","ecosystem":"pip","affected":["openssl-encrypt < 1.4.9"],"patched":["openssl-encrypt 1.4.9"],"published":"2026-08-27","updated":"2026-09-03","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/PYSEC-2026-3802","references":[{"url":"https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-587j-4r3v-cm2c"},{"url":"https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-remote-code-execution-via-plugin"}],"tags":["osv","pip"],"epss":0.003,"epssPercentile":0.22937,"ingestedAt":"2026-09-03T19:32:12.409Z","slug":"CVE-2026-81719","body":"## Overview\n\nopenssl_encrypt before 1.4.9 executes untrusted third-party plugins with insufficient controls: the plugin signature policy defaulted to WARN, so an unsigned/unverifiable non-built-in plugin was compiled and executed in the host process at import time, before the runtime sandbox is installed. The only default gate was an incomplete, bypassable AST denylist. If a user is induced to load an attacker's plugin, this results in arbitrary code execution with the privileges of the user running openssl_encrypt. Fixed in 1.4.9 by defaulting the signature policy to ENFORCE for non-built-in plugins.\n\n## Affected packages\n\n- `openssl-encrypt < 1.4.9`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `openssl-encrypt 1.4.9`","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}