View at Official ubuntu advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2017-9462 medium priority: Ubuntu including 1 source packages (mercurial), 8 status rows across 8 suites (artful, bionic, cosmic, trusty, upstream, xenial, yakkety, zesty): released 3, ignored 2, not-affected 2, needs-triage 1.
In Mercurial before 4.1.3, "hg serve --stdio" allows remote authenticated users to launch the Python debugger, and consequently execute arbitrary code, by using --debugger as a repository name.