Vulnerability in Ruby-lang Ruby

CVE-2015-9096

Net::SMTP in Ruby before 2.4.0 is vulnerable to SMTP command injection via CRLF sequences in a RCPT TO or MAIL FROM command, as demonstrated by CRLF sequences immediately before and after a DATA substring.

Vulnerability class: CRLF Injection

EPSS: 0.016 (82.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2015-9096?
CVE-2015-9096 is a medium-severity vulnerability in Ruby-lang Ruby, classified under CRLF Injection. CVSS score: 6.1/10. Published 2017-06-12.
How severe is CVE-2015-9096?
Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2015-9096 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.