CVE-2026-47241: Net::IMAP: Denial of Service via incomplete raw argument validation
ruby · net-imap
Affected: ruby net-imap · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 32% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- ruby · net-imap>= 0.6.0, < 0.6.4.1; < 0.5.15
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-47241 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.