Detections
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Echo: popt: security update to 1.19+dfsg-2+e1

low Tenable Self-Hosted Container Security Plugin ID 478662

Description

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

 - A flaw was found in popt, a command-line option parsing library. An off-by-one error in the poptStuffArgs
 function, when repeatedly called by a host application or through deep alias nesting, can lead to
 corruption of internal program data. This corruption could potentially enable a local attacker to execute
 arbitrary code if the host application then unsafely processes the altered data. (CVE-2026-18739)

Solution

Update the popt library and its related packages to version 1.19+dfsg-2+e1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-18739

Plugin Details

Severity: Low

ID: 478662

Version: Revision 1.1

Type: Local

Published: 11/9/2026

Updated: 11/9/2026

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

CVSS v2

Risk Factor: Low

Base Score: 1

Temporal Score: 0.7

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

CVSS Score Source: CVE-2026-18739

CVSS v3

Risk Factor: Low

Base Score: 2.5

Temporal Score: 2.2

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 8/4/2026

Vulnerability Publication Date: 8/4/2026

Reference Information

CVE: CVE-2026-18739