Allocation of Resources Without Limits or Throttling Affecting spegel package, versions <0.7.4-r4


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.52% (42nd percentile)

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  • Snyk IDSNYK-WOLFILATEST-SPEGEL-18507953
  • published2 Aug 2026
  • disclosed14 Sept 2026

Introduced: 2 Aug 2026

CVE-2026-57497  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade Wolfi spegel to version 0.7.4-r4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream spegel package and not the spegel 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.