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SCA: security update for github.com/zalando/skipper (GHSA-cc8m-98fm-rc9g)

high Tenable Self-Hosted Container Security Plugin ID 436811

Description

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

 - Skipper is an HTTP router and reverse proxy for service composition. The default skipper configuration
 before 0.23.0 was -lua-sources=inline,file. The problem starts if untrusted users can create lua filters,
 because of -lua-sources=inline , for example through a Kubernetes Ingress resource. The configuration
 inline allows these user to create a script that is able to read the filesystem accessible to the skipper
 process and if the user has access to read the logs, they an read skipper secrets. This vulnerability is
 fixed in 0.23.0. (CVE-2026-23742)

See Also

https://github.com/advisories/GHSA-cc8m-98fm-rc9g

Plugin Details

Severity: High

ID: 436811

Version: Revision 1.8

Type: Local

Family: SCA Checks

Published: 1/17/2026

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: High

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 7

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

CVSS Score Source: CVE-2026-23742

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/16/2026

Vulnerability Publication Date: 1/16/2026

Reference Information

CVE: CVE-2026-23742