CVE-2026-47240

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Source
https://cve.org/CVERecord?id=CVE-2026-47240
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-47240.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-47240
Aliases
Downstream
AZL (1)
BELL (1)
CGA (116)
CLEANSTART (2)
DEBIAN (1)
ECHO (1)
MINI (15)
OESA (5)
openSUSE (1)
RHSA (7)
RLSA (5)
SUSE (1)
UBUNTU (1)
Related
ALSA (5)
openSUSE (1)
SUSE (1)
Published
2026-06-22T20:17:15Z
Modified
2026-09-25T18:27:34Z
Severity
  • 5.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
Net::IMAP: Command Injection via non-synchronizing literal in "raw" argument
Details

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a "raw data" argument that is sent verbatim after validation to prevent command injection. However, if a server does not support non-synchronizing literals, it may still be possible to inject arbitrary IMAP commands inside non-synchronizing literals. A server without support for non-synchronizing literals may interpret the "+}\r\n" as the end of a malformed command line and respond with a tagged BAD. In that case, the contents of the literal will be interpreted as one or more new pipelined commands, allowing a CRLF command injection attack to succeed. This affects criteria for #search and #uid_search; search_keys for #sort, #thread, #uid_sort, and #uid_thread; and attr for #fetch and #uid_fetch. This vulnerability is fixed in 0.6.5 and 0.5.15.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-77",
        "CWE-93"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47240.json"
}
References

Affected packages

Git / github.com/ruby/net-imap

Affected ranges

Type
GIT
Repo
https://github.com/ruby/net-imap
Events
Introduced
567518cae5500f7c4776a1fd4e9bbd599e98b9bf
Fixed
357f3b5aee4d2140635b6ba242fbb952491e2d28
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
ce20fc8e9974ed87d0848dc411eef490623cdeb9
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0.6.0"
        },
        {
            "fixed": "0.6.4.1"
        },
        {
            "introduced": "0"
        },
        {
            "fixed": "0.5.15"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

v0.*
v0.1.0
v0.1.1
v0.2.0
v0.2.1
v0.2.2
v0.2.3
v0.3.0
v0.3.1
v0.3.2
v0.3.3
v0.3.4
v0.4.0
v0.4.1
v0.4.10
v0.4.11
v0.4.12
v0.4.13
v0.4.14
v0.4.2
v0.4.3
v0.4.4
v0.4.5
v0.4.6
v0.4.7
v0.4.8
v0.4.9
v0.5.0
v0.5.1
v0.5.10
v0.5.11
v0.5.12
v0.5.13
v0.5.14
v0.5.2
v0.5.3
v0.5.4
v0.5.5
v0.5.6
v0.5.7
v0.5.8
v0.5.9
v0.6.0
v0.6.2
v0.6.4

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-47240.json"