VDB
DEBIAN-CVE-2026-42256
DEBIAN-CVE-2026-42256
PUBLISHED
CVSS 6 MEDIUM
Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. From versions 0.4.0 to before 0.4.24, 0.5.0 to before 0.5.14, and 0.6.0 to before 0.6.4, when authenticating a connection with SCRAM-SHA1 or SCRAM-SHA256, a hostile server can perform a computational denial-of-service attack on the client process by sending a big iteration count value. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4.
Risk Scores
CVSS 4.0
6
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/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
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | ruby3.1 | 3.1.2-7, 3.1.2-7, 3.1.2-7 |
| Debian:13 | ruby3.3 | 0, 3.3.8-2, 3.3.8-2.1 |
| Debian:11 | ruby2.7 | 2.7.5-1, 2.7.4-1, 2.7.4-1 |
| Debian:14 | ruby3.3 | 3.3.8-2.1, 3.3.8-2, 0 |
Timeline
- May 9, 2026 CVE Published
- May 16, 2026 CVE Updated