{"action":"Upgrade ujson to 5.2.0-1 or later.","affected":[{"fixed":"5.2.0-1","introduced":"0"}],"component":"ujson","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["5.2.0-1"],"id":"tcs_01M5NG32KT9QBMMVVJD381ZWYV","modified_at":"2026-10-23T18:04:17.881565140Z","published_at":"2022-01-01T00:15:08.813Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-45958","https://security-tracker.debian.org/tracker/CVE-2021-45958"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-45958","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-45958"}],"summary":"UltraJSON (aka ujson) through 5.1.0 has a stack-based buffer overflow in Buffer_AppendIndentUnchecked (called from encode). Exploitation can, for example, use a large amount of indentation."}