Resource Exhaustion Affecting spegel package, versions <0.6.0-r4


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-WOLFILATEST-SPEGEL-15416422
  • published5 Mar 2026
  • disclosed12 Feb 2026

Introduced: 12 Feb 2026

CVE-2026-21435  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Wolfi spegel to version 0.6.0-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 v0.10.0, an attacker can cause a denial of service in webtransport-go by preventing or indefinitely delaying WebTransport session closure. A malicious peer can withhold QUIC flow control credit on the CONNECT stream, blocking transmission of the WT_CLOSE_SESSION capsule and causing the close operation to hang. This vulnerability is fixed in v0.10.0.

CVSS Base Scores

version 3.1