Allocation of Resources Without Limits or Throttling Affecting k3s package, versions <1.36.2.1-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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- published31 Jul 2026
- disclosed14 Sept 2026
Introduced: 31 Jul 2026
CVE-2026-57497 (opens in a new tab)How to fix?
Upgrade Wolfi k3s to version 1.36.2.1-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 Wolfi.
See How to fix? for Wolfi relevant fixed versions and status.
webtransport-go is an implementation of the WebTransport protocol. Prior to 0.11.1, Session.parseNextCapsule() in session.go skips an unknown WebTransport capsule on the HTTP/3 request stream by calling io.ReadAll on the capsule reader, retaining the complete declared capsule body in memory. A malicious peer can send a large unknown capsule and cause a client or server to allocate memory for the full payload; QUIC flow control does not bound the total retained allocation because reading advances the flow-control window while the received bytes remain in memory. The resulting memory and resource exhaustion can disrupt or crash the affected process. This issue is fixed in version 0.11.1.