{"action":"Upgrade net-imap to 0.3.10 or later.","affected":[{"fixed":"0.6.4","introduced":"0.6.0"},{"fixed":"0.5.14","introduced":"0.5.0"},{"fixed":"0.4.24","introduced":"0.4.0"},{"fixed":"0.3.10","introduced":"0"}],"component":"net-imap","cve_ids":["CVE-2026-42246"],"ecosystem":"RubyGems","epss":0.00312,"exploited":false,"fixed_versions":["0.6.4","0.5.14","0.4.24","0.3.10"],"ghsa_id":"GHSA-vcgp-9326-pqcp","id":"tcs_01M5KENGY5JE6DSMEGKDXG380H","modified_at":"2026-09-10T03:50:47.706717838Z","published_at":"2026-05-04T22:01:52Z","references":["https://osv.dev/vulnerability/GHSA-vcgp-9326-pqcp","https://github.com/ruby/net-imap/security/advisories/GHSA-vcgp-9326-pqcp","https://nvd.nist.gov/vuln/detail/CVE-2026-42246","https://github.com/ruby/net-imap/commit/0ede4c40b1523dfeaf95777b2678e54cc0fd9618","https://github.com/ruby/net-imap/commit/24a4e770b43230286a05aa2a9746cdbb3eb8485e","https://github.com/ruby/net-imap/commit/97e2488fb5401a1783bddd959dde007d9fbce42c","https://github.com/ruby/net-imap/commit/f79d35bf5833f186e81044c57c843eda30c873da","https://github.com/ruby/net-imap","https://github.com/ruby/net-imap/releases/tag/v0.3.10","https://github.com/ruby/net-imap/releases/tag/v0.4.24","https://github.com/ruby/net-imap/releases/tag/v0.5.14","https://github.com/ruby/net-imap/releases/tag/v0.6.4","https://github.com/rubysec/ruby-advisory-db/blob/master/gems/net-imap/CVE-2026-42246.yml","https://nostarttls.secvuln.info","https://www.rfc-editor.org/info/rfc8314"],"severity":{"label":"high","score":7.4},"sources":[{"source":"osv","source_id":"GHSA-vcgp-9326-pqcp","url":"https://osv.dev/vulnerability/GHSA-vcgp-9326-pqcp"},{"source":"nvd","source_id":"CVE-2026-42246","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42246"}],"summary":"net-imap vulnerable to STARTTLS stripping via invalid response timing"}