Detections
Analytics

SCA: security update for net-imap (GHSA-hm49-wcqc-g2xg)

medium Tenable Self-Hosted Container Security Plugin ID 441075

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, several Net::IMAP commands accept a raw string argument that is sent
 to the server without validation or escaping. If this string is derived from user-controlled input, it may
 contain contain CRLF sequences, which an attacker can use to inject arbitrary IMAP commands. This issue
 has been patched in versions 0.4.24, 0.5.14, and 0.6.4. (CVE-2026-42257)

Solution

Update the net-imap library and its related packages to version 0.4.24 or later.

See Also

https://github.com/advisories/GHSA-hm49-wcqc-g2xg

Plugin Details

Severity: Medium

ID: 441075

Version: Revision 1.6

Type: Local

Family: SCA Checks

Published: 5/5/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.88

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-42257

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

CVSS v4

Risk Factor: Medium

Base Score: 5.8

Threat Score: 5.8

Threat Vector: CVSS:4.0/E:U

Vector: 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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/4/2026

Vulnerability Publication Date: 5/4/2026

Reference Information

CVE: CVE-2026-42257