Uncaught Exception Affecting wasmcloud package, versions <1.9.2-r2


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.21% (43rd percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-WASMCLOUD-15690949
  • published19 Mar 2026
  • disclosed10 Mar 2026

Introduced: 10 Mar 2026

NewCVE-2026-31812  (opens in a new tab)
CWE-248  (opens in a new tab)

How to fix?

Upgrade Chainguard wasmcloud to version 1.9.2-r2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream wasmcloud package and not the wasmcloud package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Quinn is a pure-Rust, async-compatible implementation of the IETF QUIC transport protocol. Prior to 0.11.14, a remote, unauthenticated attacker can trigger a denial of service in applications using vulnerable quinn versions by sending a crafted QUIC Initial packet containing malformed quic_transport_parameters. In quinn-proto parsing logic, attacker-controlled varints are decoded with unwrap(), so truncated encodings cause Err(UnexpectedEnd) and panic. This is reachable over the network with a single packet and no prior trust or authentication. This vulnerability is fixed in 0.11.14.

CVSS Base Scores

version 3.1