View at Official debian advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2013-6401 not yet assigned priority: Debian including 1 source packages (jansson), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.
Jansson, possibly 2.4 and earlier, does not restrict the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via a crafted JSON document.