Description
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.
Affected products
ruby-lang: net\
References10
- github.com/ruby/net-imap/security/advisories/GHSA-75xq-5h9v-w6px MitigationVendor Advisory
- github.com/ruby/net-imap/releases/tag/v0.4.24 Release Notes
- github.com/ruby/net-imap/releases/tag/v0.5.14 Release Notes
- github.com/ruby/net-imap/releases/tag/v0.6.4 Release Notes
- access.redhat.com/errata/RHSA-2026:33462
- access.redhat.com/errata/RHSA-2026:33512
- access.redhat.com/errata/RHSA-2026:33514
- access.redhat.com/errata/RHSA-2026:33515
- access.redhat.com/errata/RHSA-2026:33540
- access.redhat.com/errata/RHSA-2026:33565
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L - CVSS 4.0
-
5.8
MEDIUM
Score source: CNA
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 1% percentile: 57 · as of 14 November 2026
- CWE
- CWE-77CWE-93
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.