Improper Encoding or Escaping of Output Affecting k3s package, versions <1.35.3.1-r8
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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Start learning- Snyk IDSNYK-CHAINGUARDLATEST-K3S-16633890
- published11 May 2026
- disclosed7 May 2026
Introduced: 7 May 2026
NewCVE-2026-39826 (opens in a new tab)How to fix?
Upgrade Chainguard k3s to version 1.35.3.1-r8 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream k3s package and not the k3s package as distributed by Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
If a trusted template author were to write a <script> tag containing an empty 'type' attribute or a 'type' attribute with an ASCII whitespace, the execution of the template would incorrectly escape any data passed into the <script> block.