# net-imap (RubyGems) vulnerabilities Source: https://junglewise.ai/threats/technologies/net-imap Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/net-imap.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 10 vulnerabilities in net-imap (RubyGems): 0 in the last 7 days and 0 in the last 90 days, 2 of them critical and 0 exploited in the wild. The most recent, CVE-2026-47242, was published on 22 June 2026. ## Counts - Last 7 days: 0 - Last 30 days: 0 - Last 90 days: 0 - All time: 10 (2 critical, 0 exploited in the wild) ## About net-imap (RubyGems) Ruby library for working with IMAP protocol email servers. ## Latest net-imap (RubyGems) vulnerabilities - [CVE-2026-47242: Ruby Net::IMAP command injection in ID and ENABLE commands](https://junglewise.ai/threats/cve-2026-47242-ruby-net-imap-command-injection-in-id-and-enable-commands) (medium, CVSS 4, published 22 Jun 2026) - [CVE-2026-47241: Ruby Net::IMAP denial of service via incomplete raw argument validation](https://junglewise.ai/threats/cve-2026-47241-ruby-net-imap-denial-of-service-via-incomplete-raw-argument) (medium, CVSS 4, published 22 Jun 2026) - [CVE-2026-47240: Ruby Net::IMAP command injection via non-synchronizing literals](https://junglewise.ai/threats/cve-2026-47240-ruby-net-imap-command-injection-via-non-synchronizing-literals) (medium, CVSS 4, published 22 Jun 2026) - [CVE-2026-42258: Ruby Net::IMAP command injection via Symbol arguments](https://junglewise.ai/threats/cve-2026-42258-ruby-net-imap-command-injection-via-symbol-arguments) (critical, CVSS 9.8, published 9 May 2026) - [CVE-2026-42257: Ruby Net::IMAP command injection in multiple commands](https://junglewise.ai/threats/cve-2026-42257-ruby-net-imap-command-injection-in-multiple-commands) (critical, CVSS 9.8, published 9 May 2026) - [CVE-2026-42256: Ruby Net::IMAP computational DoS in SCRAM authentication](https://junglewise.ai/threats/cve-2026-42256-ruby-net-imap-computational-dos-in-scram-authentication) (medium, CVSS 6.5, published 9 May 2026) - [CVE-2026-42246: Ruby Net::IMAP STARTTLS stripping vulnerability](https://junglewise.ai/threats/cve-2026-42246-ruby-net-imap-starttls-stripping-vulnerability) (high, CVSS 7.4, published 9 May 2026) - [CVE-2026-42245: Ruby Net::IMAP denial of service in ResponseReader](https://junglewise.ai/threats/cve-2026-42245-ruby-net-imap-denial-of-service-in-responsereader) (high, CVSS 7.5, published 9 May 2026) - [CVE-2025-43857: net-imap rubygem vulnerable to possible DoS by memory exhaustion](https://junglewise.ai/threats/cve-2025-43857-net-imap-rubygem-vulnerable-to-possible-dos-by-memory-exhaustion) (medium, CVSS 4, published 28 Apr 2025) - [CVE-2025-25186: Possible DoS by memory exhaustion in net-imap](https://junglewise.ai/threats/cve-2025-25186-possible-dos-by-memory-exhaustion-in-net-imap) (low, CVSS 3.1, published 10 Feb 2025) ## Most severe net-imap (RubyGems) vulnerabilities - [CVE-2026-42258: Ruby Net::IMAP command injection via Symbol arguments](https://junglewise.ai/threats/cve-2026-42258-ruby-net-imap-command-injection-via-symbol-arguments) (critical, CVSS 9.8, published 9 May 2026) - [CVE-2026-42257: Ruby Net::IMAP command injection in multiple commands](https://junglewise.ai/threats/cve-2026-42257-ruby-net-imap-command-injection-in-multiple-commands) (critical, CVSS 9.8, published 9 May 2026) - [CVE-2026-42245: Ruby Net::IMAP denial of service in ResponseReader](https://junglewise.ai/threats/cve-2026-42245-ruby-net-imap-denial-of-service-in-responsereader) (high, CVSS 7.5, published 9 May 2026) - [CVE-2026-42246: Ruby Net::IMAP STARTTLS stripping vulnerability](https://junglewise.ai/threats/cve-2026-42246-ruby-net-imap-starttls-stripping-vulnerability) (high, CVSS 7.4, published 9 May 2026) - [CVE-2026-42256: Ruby Net::IMAP computational DoS in SCRAM authentication](https://junglewise.ai/threats/cve-2026-42256-ruby-net-imap-computational-dos-in-scram-authentication) (medium, CVSS 6.5, published 9 May 2026) - [CVE-2026-47240: Ruby Net::IMAP command injection via non-synchronizing literals](https://junglewise.ai/threats/cve-2026-47240-ruby-net-imap-command-injection-via-non-synchronizing-literals) (medium, CVSS 4, published 22 Jun 2026) - [CVE-2025-43857: net-imap rubygem vulnerable to possible DoS by memory exhaustion](https://junglewise.ai/threats/cve-2025-43857-net-imap-rubygem-vulnerable-to-possible-dos-by-memory-exhaustion) (medium, CVSS 4, published 28 Apr 2025) - [CVE-2026-47241: Ruby Net::IMAP denial of service via incomplete raw argument validation](https://junglewise.ai/threats/cve-2026-47241-ruby-net-imap-denial-of-service-via-incomplete-raw-argument) (medium, CVSS 4, published 22 Jun 2026) - [CVE-2026-47242: Ruby Net::IMAP command injection in ID and ENABLE commands](https://junglewise.ai/threats/cve-2026-47242-ruby-net-imap-command-injection-in-id-and-enable-commands) (medium, CVSS 4, published 22 Jun 2026) - [CVE-2025-25186: Possible DoS by memory exhaustion in net-imap](https://junglewise.ai/threats/cve-2025-25186-possible-dos-by-memory-exhaustion-in-net-imap) (low, CVSS 3.1, published 10 Feb 2025) ## Vulnerabilities per week Nothing was published in the last eight weeks. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other RubyGems technologies - [actionpack (RubyGems)](https://junglewise.ai/threats/technologies/actionpack): 77 vulnerabilities - [nokogiri (RubyGems)](https://junglewise.ai/threats/technologies/nokogiri): 69 vulnerabilities - [rack (RubyGems)](https://junglewise.ai/threats/technologies/rack): 55 vulnerabilities - [activerecord (RubyGems)](https://junglewise.ai/threats/technologies/rubygems-activerecord): 26 vulnerabilities - [rubygems-update (RubyGems)](https://junglewise.ai/threats/technologies/rubygems-update): 25 vulnerabilities - [puppet (RubyGems)](https://junglewise.ai/threats/technologies/puppet): 23 vulnerabilities - [activesupport (RubyGems)](https://junglewise.ai/threats/technologies/activesupport): 20 vulnerabilities - [actionview (RubyGems)](https://junglewise.ai/threats/technologies/actionview): 19 vulnerabilities - [activestorage (RubyGems)](https://junglewise.ai/threats/technologies/activestorage): 19 vulnerabilities - [camaleon_cms (RubyGems)](https://junglewise.ai/threats/technologies/camaleon-cms): 19 vulnerabilities - [rails-html-sanitizer (RubyGems)](https://junglewise.ai/threats/technologies/rails-html-sanitizer): 18 vulnerabilities - [loofah (RubyGems)](https://junglewise.ai/threats/technologies/loofah): 17 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "net-imap (RubyGems) vulnerabilities", https://junglewise.ai/threats/technologies/net-imap, 13 November 2026.