CVE-2026-47242

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, when Net::IMAP#id is called with a hash argument, although the ID field value strings are correctly quoted (escaping quoted specials), they were not validated to prohibit CRLF sequences. While Net::IMAP#enable does process its arguments for aliases, it does not validate them as valid atoms (or as a list of valid atoms). The #to_s value is sent verbatim. Arguments to either command could be used by an attacker to inject arbitrary IMAP commands. This vulnerability is fixed in 0.6.5 and 0.5.15.

CVSS

No CVSS.

References

Link	Resource
https://github.com/ruby/net-imap/security/advisories/GHSA-46q3-7gv7-qmgg

Configurations

No configuration.

History

22 Jun 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-22 21:16

Updated : 2026-06-23 15:03

NVD link : CVE-2026-47242

Mitre link : CVE-2026-47242

CVE.ORG link : CVE-2026-47242

JSON object : View

Products Affected

No product.

CWE

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

CWE-93

Improper Neutralization of CRLF Sequences ('CRLF Injection')

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