Search/CVE-2026-42258
● CVE — Medium

CVE-2026-42258

Vendorruby-langProductnet\DiscoveredMay 9, 2026UpdatedAug 24, 2026

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.4.24, 0.5.14, and 0.6.4, symbol arguments to commands are vulnerable to a CRLF Injection / IMAP Command injection via Symbol arguments passed to IMAP commands. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4.

View graph Watch Export
CVSS v3.1
5.3 MEDIUM
EPSS
0.78%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
1
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 16, 2026 → Oct 26, 2026
● 0.00pp
0.78% → 0.78% over 3 tracked changes
CVSS v3.1 Detail
Attack VectorLOCAL
Attack ComplexityHIGH
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
ConfidentialityNONE
IntegrityHIGH
AvailabilityLOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
Connections
4 relationships
Timeline
disclosure → media coverage
May 9, 2026
Disclosure — published as a CVE record. · last revised by NVD Aug 24, 2026
Jul 16, 2026
ubuntu.com reports: USN-8556-1: Ruby vulnerabilities