High 8.8Published Jan 16, 2026

CVE-2026-23742Skipper is an HTTP router and reverse proxy for service composition.

Updated under an hour ago (2026-10-19 07:00 UTC)

Does this affect you?

It affects zalando skipper. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for zalando skipper

Exploited in the last 30 days

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.

CVSS: 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-94, CWE-250, CWE-522
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

zalando skipper zalando:skipper	before 0.23.0	NVD

References

https://github.com/zalando/skipper/commit/0b52894570773b29e2f3c571b94b4211ef8fa714patch
https://github.com/zalando/skipper/releases/tag/v0.23.0product, release-notes
https://github.com/zalando/skipper/security/advisories/GHSA-cc8m-98fm-rc9gexploit, mitigation, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.