{"action":"Upgrade log4net to 1.2.10+dfsg-10 or later.","affected":[{"fixed":"1.2.10+dfsg-10","introduced":"0"}],"component":"log4net","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1.2.10+dfsg-10"],"id":"tcs_01M5NRX3R9KKVVGBHA3SMMGKQE","modified_at":"2026-10-27T09:47:39.970161460Z","published_at":"2026-04-10T16:16:32.420Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-40021","https://security-tracker.debian.org/tracker/CVE-2026-40021"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-40021#Debian:14/log4net","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-40021"}],"summary":"Apache Log4net's XmlLayout https://logging.apache.org/log4net/manual/configuration/layouts.html#layout-list and XmlLayoutSchemaLog4J https://logging.apache.org/log4net/manual/configuration/layouts.htm"}