Interpretation Conflict Affecting kube-fluentd-operator package, versions <1.18.2-r67


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.25% (17th percentile)

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  • Snyk IDSNYK-WOLFILATEST-KUBEFLUENTDOPERATOR-17254078
  • published9 Jun 2026
  • disclosed2 Apr 2026

Introduced: 2 Apr 2026

CVE-2026-26961  (opens in a new tab)
CWE-436  (opens in a new tab)

How to fix?

Upgrade Wolfi kube-fluentd-operator to version 1.18.2-r67 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kube-fluentd-operator package and not the kube-fluentd-operator package as distributed by Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Multipart::Parser extracts the boundary parameter from multipart/form-data using a greedy regular expression. When a Content-Type header contains multiple boundary parameters, Rack selects the last one rather than the first. In deployments where an upstream proxy, WAF, or intermediary interprets the first boundary parameter, this mismatch can allow an attacker to smuggle multipart content past upstream inspection and have Rack parse a different body structure than the intermediary validated. This issue has been patched in versions 2.2.23, 3.1.21, and 3.2.6.

CVSS Base Scores

version 3.1