cvedb.io
CVE-2026-42246
HIGH · CVSS 7.4
EPSS exploitation probability: 0%
Published 2026-05-09T20:16:28.163 · Last modified 2026-07-02T12:17:15.963

Summary

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.3.10, 0.4.24, 0.5.14, and 0.6.4, a man-in-the-middle attacker can cause Net::IMAP#starttls to return "successfully", without starting TLS. This issue has been patched in versions 0.3.10, 0.4.24, 0.5.14, and 0.6.4.

Affected products

ruby-lang — net\

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.