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Advisory record · GHSA-jqpg-j7w6-42pr

Dynamic record lifting can allocate beyond the hostcall fuel limit

CVSS 1.0 LowEPSS 0.0015 · 4th percentile

Published by the GitHub Advisory Database at 24 Sept 2026, 12:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
wasmtimecrates.io>=0.0.0-0, <36.0.16 || >=37.0.0, <48.0.3 || >=49.0.0, <49.0.136.0.16, 48.0.3, 49.0.1
Identifiers
GHSA-jqpg-j7w6-42pr · CVE-2026-115389 · RUSTSEC-2026-0316
Weakness (CWE)
CWE-770
Tags
Published
24 Sept 2026
Updated
24 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The Wasmtime crate is affected in versions before 36.0.16, from 37.0.0 before 48.0.3, and from 49.0.0 before 49.0.1. The source gives few details: it describes dynamic record lifting allocating beyond the hostcall fuel limit, but does not say what an attacker must do to trigger it. Upgrade wasmtime to 36.0.16, 48.0.3, or 49.0.1, depending on your release line.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
1.0 Low 4.0 CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CNA (VulnCheck)
  • CISA KEV Not listed.
  • EPSS 0.0015, the 4th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:24 UTC First seen by agentprime
  2. 31 Oct 2026, 14:24 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.