CVE-2017-18266 (debian_linux, ubuntu_linux, xdg-utils)
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The open_envvar function in xdg-open in xdg-utils before 1.1.3 does not validate strings before launching the program specified by the BROWSER environment variable, which might allow remote attackers to conduct argument-injection attacks via a crafted URL, as demonstrated by %s in this environment variable.
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-18266
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