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Medium, CVSS 6.9

CWA-2023-004: Excessive number of function parameters in compiled Wasm

GHSA-75qh-gg76-p2w4

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (cosmwasm-vm 1.5.1, 1.4.2, 1.3.4, 1.2.8; github.com/CosmWasm/wasmvm 1.5.1, 1.4.2, 1.3.1, 1.2.5), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • crates.io cosmwasm-vm

    Affected
    < 1.2.8>= 1.3.0, < 1.3.4>= 1.4.0, < 1.4.2>= 1.5.0, < 1.5.1
    Fixed in
    1.4.2, 1.2.8, 1.5.1, 1.3.4

  • Go github.com/CosmWasm/wasmvm

    Affected
    < 1.2.5>= 1.3.0, < 1.3.1>= 1.4.0, < 1.4.2>= 1.5.0, < 1.5.1
    Fixed in
    1.4.2, 1.3.1, 1.2.5, 1.5.1

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N · score source
EPSS
No dated EPSS signal available.
Source description

As published by the source; long descriptions are shortened.

A specifically crafted Wasm file can cause the VM to consume excessive amounts of memory when compiling a contract. This can lead to high memory usage, slowdowns, potentially a crash and can poison a lock in the VM, preventing any further interaction with contracts. For more information, see CWA-2023-004.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-75qh-gg76-p2w4

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: GHSA-75qh-gg76-p2w4

Advisory: CWA-2023-004: Excessive number of function parameters in compiled Wasm
IDs: GHSA-75qh-gg76-p2w4
Record: https://patchnext.com/advisories/ghsa-75qh-gg76-p2w4 (revision 1, source checked 26 Oct 2026, 15:08 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.9)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: cosmwasm-vm 1.5.1, 1.4.2, 1.3.4, 1.2.8; github.com/CosmWasm/wasmvm 1.5.1, 1.4.2, 1.3.1, 1.2.5. A vendor fix does not mean a deployment is fixed.

## Affected components
- crates.io cosmwasm-vm: affected < 1.2.8; >= 1.3.0, < 1.3.4; >= 1.4.0, < 1.4.2; >= 1.5.0, < 1.5.1; fixed in 1.4.2, 1.2.8, 1.5.1, 1.3.4
- Go github.com/CosmWasm/wasmvm: affected < 1.2.5; >= 1.3.0, < 1.3.1; >= 1.4.0, < 1.4.2; >= 1.5.0, < 1.5.1; fixed in 1.4.2, 1.3.1, 1.2.5, 1.5.1

## Suggested inspection (read-only)
- crates.io cosmwasm-vm: check the installed version with your package manager.
- Go github.com/CosmWasm/wasmvm: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on cosmwasm-vm, github.com/CosmWasm/wasmvm.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-75qh-gg76-p2w4 (GitHub-reviewed advisory GHSA-75qh-gg76-p2w4 lists affected ranges: crates.io cosmwasm-vm >=0 =1.3.0 =1.4.0 =1.5.0 =0 =1.3.0 =1.4.0 =1.5.0 <1.5.1)

Commands are suggestions: review each one before running it.

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