{"action":"Upgrade github.com/go-acme/lego/v4 to 4.34.0 or later.","affected":[{"fixed":"4.34.0","introduced":"0"}],"component":"github.com/go-acme/lego/v4","cve_ids":["CVE-2026-40611"],"ecosystem":"Go","epss":0.00418,"exploited":false,"fixed_versions":["4.34.0"],"ghsa_id":"GHSA-qqx8-2xmm-jrv8","id":"tcs_01M5KFKE6556R93W1ZDYES2MPH","modified_at":"2026-09-10T03:51:02.915079211Z","published_at":"2026-04-16T21:28:55Z","references":["https://osv.dev/vulnerability/GHSA-qqx8-2xmm-jrv8","https://github.com/go-acme/lego/security/advisories/GHSA-qqx8-2xmm-jrv8","https://nvd.nist.gov/vuln/detail/CVE-2026-40611","https://github.com/go-acme/lego"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"GHSA-qqx8-2xmm-jrv8","url":"https://osv.dev/vulnerability/GHSA-qqx8-2xmm-jrv8"}],"summary":"ACME Lego: Arbitrary File Write via Path Traversal in Webroot HTTP-01 Provider"}