QwikSec

Security Database

CVE

CWE

Training

CVE-2026-23742

Published: Jan 16, 2026

Modified: Jan 16, 2026

PUBLISHED

CVSS v3.1

8.8

HIGH

Description

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.

Vendor	Product	Versions
zalando	skipper	affected `< 0.23.0`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

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

x_refsource_CONFIRM

https://github.com/zalando/skipper/commit/0b52894570773b29e2f3c571b94b4211ef8fa714

x_refsource_MISC

https://github.com/zalando/skipper/releases/tag/v0.23.0

x_refsource_MISC

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