{"cve":"CVE-2026-74899","nvd":{"published":"2026-08-17T11:16:44.917","modified":"2026-08-28T18:34:48.753","status":"Analyzed","description":"openssl_encrypt versions before 1.4.0 contain a sandbox escape vulnerability in IsolatedPluginExecutor that exposes Python type objects in restricted exec() builtins. Attackers can traverse the Python class hierarchy via __class__.__mro__.__subclasses__() to access system functions and execute arbitrary OS commands.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":9.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-95"],"references":["https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-m25m-ggxg-239c","https://www.vulncheck.com/advisories/openssl-encrypt-before-sandbox-escape-via-type-hierarchy","https://github.com/siyuan-note/siyuan/security/advisories/GHSA-43jx-gxq4-jpjc"],"products":["jahlives:openssl_encrypt"],"source":"nvd","synced_at":"2026-10-19T22:49:10.689564601+00:00"},"epss":{"cve":"CVE-2026-74899","score":0.0075,"percentile":0.5498,"date":"2026-11-01"},"kev":null,"osv":[{"id":"PYSEC-2026-3727","url":"https://osv.dev/vulnerability/PYSEC-2026-3727","summary":"","modified":"2026-08-29T09:10:52.207516742Z","packages":[{"ecosystem":"PyPI","name":"openssl-encrypt","purl":"pkg:pypi/openssl-encrypt","ranges":["<1.4.0"],"fixed":["1.4.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}