Bug 2468495 (CVE-2026-42245) - CVE-2026-42245 ruby: net-imap: Net::IMAP: Denial of Service via crafted IMAP responses
Summary: CVE-2026-42245 ruby: net-imap: Net::IMAP: Denial of Service via crafted IMAP ...
Keywords:
Status: NEW
Alias: CVE-2026-42245
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-09 20:01 UTC by OSIDB Bzimport
Modified: 2026-05-15 16:04 UTC (History)
12 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-05-09 20:01:15 UTC 
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, Net::IMAP::ResponseReader has quadratic time complexity when reading large responses containing many string literals. A hostile server can send responses which are crafted to exhaust the client's CPU for a denial of service attack. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4.
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