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CVE-2015-9097
The mail gem before 2.5.5 for Ruby (aka A Really Ruby Mail Library) is vulnerable to SMTP command injection via CRLF sequences in a RCPT…
- 6.1MediumCVSS base score
- 3.4%Exploitation in 30 daysEPSS · top 11% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The mail gem before 2.5.5 for Ruby (aka A Really Ruby Mail Library) 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.
Timeline
ID reserved
By mitre
Published
- 7 years later
· 7 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 3.4% · top 11% of all CVEs (11 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.1.
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- RubyGemsmailGHSA-q86f-fmqf-qrf6 (opens in a new tab)
References
References7
- https://github.com/mikel/mail/pull/1097 (opens in a new tab)x_refsource_MISCx_transferred
- https://hackerone.com/reports/137631 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/mikel/mail/commit/72befdc4dab3e6e288ce226a7da2aa474cf5be83 (opens in a new tab)x_refsource_MISCx_transferred
- http://openwall.com/lists/oss-security/2015/12/11/3 (opens in a new tab)x_refsource_MISCx_transferred
- https://rubysec.com/advisories/mail-OSVDB-131677 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/rubysec/ruby-advisory-db/issues/215 (opens in a new tab)x_refsource_MISCx_transferred
- http://www.mbsd.jp/Whitepaper/smtpi.pdf (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2017-0290 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-q86f-fmqf-qrf6 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2015-9097)Record last updated .