Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') Affecting github.com/traefik/traefik/v3/pkg/provider/kubernetes/gateway package, versions <3.6.10
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMTRAEFIKTRAEFIKV3PKGPROVIDERKUBERNETESGATEWAY-15481940
- published12 Mar 2026
- disclosed11 Mar 2026
- creditOleh Konko
Introduced: 11 Mar 2026
CVE-2026-29777 Â (opens in a new tab)How to fix?
Upgrade github.com/traefik/traefik/v3/pkg/provider/kubernetes/gateway to version 3.6.10 or higher.
Overview
Affected versions of this package are vulnerable to Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') via unsanitized header or query parameter match values in the HTTPRoute resource. An attacker can bypass listener hostname constraints and redirect traffic for victim hostnames to attacker-controlled backends by injecting backtick-delimited rule tokens.