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CVE-2024-27529

wasm3 uncontrolled memory allocation vulnerability

8.4 High

wasm3 139076a contains memory leaks in Read_utf8.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.26%Up 0.2 points since Nov 9, 2024
90%50%10%1%

What each source reports

CVE List Score used 8.4

wasm3 139076a contains memory leaks in Read_utf8.

Record
CVE-2024-27529
CVSS 3.1
8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-125
Updated
2026-11-02
EUVDEUVD-2024-3246 8.4

wasm3 139076a contains memory leaks in Read_utf8.

Record
EUVD-2024-3246
CVSS 3.1
8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-fmq6-4w57-2w3v 6.9

wasm3 uncontrolled memory allocation vulnerability

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

Record
GHSA-fmq6-4w57-2w3v
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
CVSS 3.1
8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-125, CWE-400
Updated
2026-11-02
NVD 8.4

wasm3 139076a contains memory leaks in Read_utf8.

Record
CVE-2024-27529
CVSS 3.1
8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-125
Updated
2026-11-02
OSV 8.4

wasm3 139076a contains memory leaks in Read_utf8.

Record
CVE-2024-27529
CVSS 3.1
8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-fmq6-4w57-2w3v 6.9

wasm3 uncontrolled memory allocation vulnerability

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

Record
GHSA-fmq6-4w57-2w3v
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
CVSS 3.1
8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-125, CWE-400
Updated
2026-11-02
OSVPYSEC-2024-305 8.4

wasm3 139076a contains memory leaks in Read_utf8.

Record
PYSEC-2024-305
CVSS 3.1
8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
github.com/shareup/wasm-interpreter-apple
SwiftURL
 through 0.8.1 None known
pywasm3
PyPI
 through 0.5.0 None known
wasm3
crates.io
 through 0.3.1 None known
pywasm3
PyPI
 through 0.5.0, plus listed versions
0.0.10.0.20.4.80.4.9
 None known
pywasm3
PyPI
 through 139076a, plus listed versions
0.0.10.0.20.4.80.4.90.5.0
 None known

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-27529 is a high vulnerability (CVSS 8.4) in Wasm3 Project Wasm3, published November 8, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 18th percentile. No source names a fixed version.

References

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