{"cve":"CVE-2026-47241","nvd":{"published":"2026-06-22T21:16:24.677","modified":"2026-10-25T23:10:00.167","status":"Deferred","description":"Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a raw string argument which is only validated to prevent CRLF injection and then sent verbatim. If this string is derived from user-controlled input, an attacker can force the next command to be absorbed as a continuation of the first command. This will cause the first command to eventually fail, but also prevents it from returning until another command is sent (from another thread). That other command will not return until the connection is closed. This vulnerability is fixed in 0.6.5 and 0.5.15.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":2.1},"cvss_v3":null,"cwes":["CWE-162","CWE-182","CWE-186"],"references":["https://github.com/ruby/net-imap/security/advisories/GHSA-c4fp-cxrr-mj66"],"products":[],"source":"nvd","synced_at":"2026-10-25T23:44:33.281319194+00:00"},"epss":{"cve":"CVE-2026-47241","score":0.00382,"percentile":0.3194,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-c4fp-cxrr-mj66","url":"https://osv.dev/vulnerability/GHSA-c4fp-cxrr-mj66","summary":"Net::IMAP: Denial of Service via incomplete raw argument validation","modified":"2026-09-10T03:51:08.385505121Z","packages":[{"ecosystem":"RubyGems","name":"net-imap","purl":"pkg:gem/net-imap","ranges":[">=0.6.0 <0.6.4.1"],"fixed":["0.6.4.1"]},{"ecosystem":"RubyGems","name":"net-imap","purl":"pkg:gem/net-imap","ranges":["<0.5.15"],"fixed":["0.5.15"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}