doedscript in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638, but the ! syntax is specific to ed, and is unrelated to a shell metacharacter.
{
"license": "CC-BY-4.0",
"sources": [
{
"published": "2019-08-16T04:15:09.860Z",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2018-20969",
"modified": "2024-11-21T04:02:35.423Z",
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2018-20969",
"id": "CVE-2018-20969",
"imported": "2026-03-31T16:10:31.560Z"
}
]
}