CVE-2026-65604

High

Description

Skipper contains an incomplete fix for CVE-2026-50197 in which oversized request bodies bypass Open Policy Agent (OPA) deny-on-presence Rego policies. When a request body exceeds the configured maxBodyBytes limit, Skipper forwards the full payload to the upstream service while OPA evaluates against an empty parsed_body, so policies that deny requests based on body content are not enforced and forbidden actions proceed. No fixed version is available; v0.27.26 adds documentation guidance only.

SeverityHigh

CVSS8.2

Exploit probability—

ProductZalando Skipper

PublishedJul 23, 2026

First seenJul 23, 2026

Weakness typeCWE-20Improper input validation

How to fix

Vendor advisories

github.com/zalando/skipper/security/advisories/GHSA-8qqm-fp2q-v734

Affected products

Product	Affected versions	Fixed in
zalando skipper	No range specified	—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.