CVE-2017-17521 (https://nvd.nist.gov/vuln/detail/CVE-2017-17521): uiutil.c in FontForge through 20170731 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, a different vulnerability than CVE-2017-17534.
GLSA Vote: No Thank you all for you work. Closing as [noglsa].