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CVE-2024-27529 — Vulnerability in pywasm3 — CVE Details

MEDIUM

wasm3 uncontrolled memory allocation vulnerability

Published November 9, 2024Updated September 10, 2026Source: osv

Summary

wasm3 at commit 139076a contains a memory leak in the Read_utf8 function.

Advisory Timeline

  • First published November 9, 2024 (702 days ago).
  • Last revised September 10, 2026 — 670 days after initial publication.

Affected Packages (2)

Affects 2 ecosystems: crates.io (1), pypi (1).

PackageEcosystemAffectedFixed In
pywasm3
pypi
0.0.1, 0.0.2, 0.4.8, 0.4.9 (+1 more)Range-based data available
wasm3
crates.io
All versionsRange-based data available

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-125
    Out-of-bounds ReadMITRE
  • CWE-400
    Uncontrolled Resource ConsumptionMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 8.4 score means for each attack dimension.

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2024-27529?
wasm3 uncontrolled memory allocation vulnerability This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 8.4/10).
How do I check if my project is affected by CVE-2024-27529?
CVE-2024-27529 affects pywasm3 and wasm3. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2024-27529 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
8.4

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-fmq6-4w57-2w3v
PYSEC-2024-305

Related CVEs

  • CVE-2022-39974
    HIGH

    WASM3 Improper Input Validation vulnerability

  • CVE-2026-102821
    MEDIUM

    Russh: Unbounded memory exhaustion via CHANNEL_OPEN flood during a client-stalled rekey

  • CVE-2026-102820
    MEDIUM

    pageant: Out-of-bounds read / oversized allocation in `pageant` MemoryMap::read via a malicious Pageant agent (Windows)

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