{"id":"CVE-2020-15271","aliases":["GHSA-c84h-w6cr-5v8q","PYSEC-2020-61"],"title":"Markdown-supplied Shell Command Execution","summary":"Markdown-supplied Shell Command Execution","severity":"critical","cvss":9.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N","vendor":"lookatme","product":"lookatme","ecosystem":"pip","affected":["lookatme < 2.3.0"],"patched":["lookatme 2.3.0"],"published":"2020-10-27","updated":"2026-09-10","sourceUpdated":"2026-09-10T03:48:59.655044527Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-c84h-w6cr-5v8q","references":[{"url":"https://github.com/d0c-s4vage/lookatme/security/advisories/GHSA-c84h-w6cr-5v8q"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15271"},{"url":"https://github.com/d0c-s4vage/lookatme/pull/110"},{"url":"https://github.com/d0c-s4vage/lookatme/commit/72fe36b784b234548d49dae60b840c37f0eb8d84"},{"url":"https://github.com/d0c-s4vage/lookatme"},{"url":"https://github.com/d0c-s4vage/lookatme/releases/tag/v2.3.0"},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/lookatme/PYSEC-2020-61.yaml"},{"url":"https://pypi.org/project/lookatme/#history"}],"tags":["osv","pip"],"epss":0.0231,"epssPercentile":0.82641,"ingestedAt":"2026-09-12T03:13:01.687Z","slug":"CVE-2020-15271","body":"## Overview\n\n### Impact\n\nlookatme versions prior to 2.3.0 automatically loaded the built-in \"terminal\" and \"file_loader\" extensions. Users that use lookatme to render untrusted markdown may have malicious shell commands automatically run on their system.\n\n### Patches\n\nUsers should upgrade to lookatme versions 2.3.0 or above.\n\n### Workarounds\n\nThe `lookatme/contrib/terminal.py` and `lookatme/contrib/file_loader.py` files may be manually deleted. Additionally, it is always recommended to be aware of what is being rendered with lookatme.\n\n### References\n\n* https://github.com/d0c-s4vage/lookatme/pull/110\n* https://github.com/d0c-s4vage/lookatme/releases/tag/v2.3.0\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open an issue in [d0c-s4vage/lookatme](https://github.com/d0c-s4vage/lookatme)\n\n## Affected packages\n\n- `lookatme < 2.3.0`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `lookatme 2.3.0`","depth":"midnight","depthScore":52,"depthScoreParts":{"impact":51.2,"likelihood":0.5,"exploitation":0,"ransomware":0},"changes":[]}