{"action":"Upgrade github.com/enchant97/note-mark/backend to 0.19.2-0.20260411145025-cf4c6f6acf70 or later.","affected":[{"fixed":"0.19.2-0.20260411145025-cf4c6f6acf70","introduced":"0"}],"component":"github.com/enchant97/note-mark/backend","cve_ids":["CVE-2026-40263"],"ecosystem":"Go","epss":0.00258,"exploited":false,"fixed_versions":["0.19.2-0.20260411145025-cf4c6f6acf70"],"ghsa_id":"GHSA-w6m9-39cv-2fwp","id":"tcs_01M5KFQ9ZANWK7ZY3SRBYX3WJQ","modified_at":"2026-06-25T23:11:42.943800917Z","published_at":"2026-04-13T19:31:50Z","references":["https://osv.dev/vulnerability/GHSA-w6m9-39cv-2fwp","https://github.com/enchant97/note-mark/security/advisories/GHSA-w6m9-39cv-2fwp","https://nvd.nist.gov/vuln/detail/CVE-2026-40263","https://github.com/enchant97/note-mark/commit/cf4c6f6acf70b569d80396d323b067c00d45c034","https://github.com/enchant97/note-mark"],"severity":{"label":"low","score":3.7},"sources":[{"source":"osv","source_id":"GHSA-w6m9-39cv-2fwp","url":"https://osv.dev/vulnerability/GHSA-w6m9-39cv-2fwp"}],"summary":"Note Mark: Username Enumeration via Login Endpoint Timing Side-Channel"}