Detections
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Echo: ruby3.3: security update to 3.3.13-0+deb13u1

medium Tenable Self-Hosted Container Security Plugin ID 478667

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to
 versions 0.4.24, 0.5.14, and 0.6.4, symbol arguments to commands are vulnerable to a CRLF Injection / IMAP
 Command injection via Symbol arguments passed to IMAP commands. This issue has been patched in versions
 0.4.24, 0.5.14, and 0.6.4. (CVE-2026-42258)

Solution

Update the ruby3.3 library and its related packages to version 3.3.13-0+deb13u1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-42258

Plugin Details

Severity: Medium

ID: 478667

Version: Revision 1.1

Type: Local

Published: 11/9/2026

Updated: 11/9/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5.5

Percentile: 96

CVSS v2

Risk Factor: Medium

Base Score: 4.5

Temporal Score: 3.3

Vector: CVSS2#AV:L/AC:H/Au:S/C:N/I:C/A:P

CVSS Score Source: CVE-2026-42258

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 5.8

Threat Score: 1.9

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/6/2026

Vulnerability Publication Date: 5/4/2026

Reference Information

CVE: CVE-2026-42258