CVE-2026-3387

A vulnerability has been found in wren-lang wren up to 0.4.0. Affected by this issue is the function getByteCountForArguments of the file src/vm/wren_compiler.c. Such manipulation leads to null pointer dereference. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

CVSS v3 3.3 LOW
CVSS v2.0 1.7 LOW

3.3^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

1.7^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:L/Au:S/C:N/I:N/A:P

Exploitability : 3.1 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/oneafter/0122/blob/main/i1220/repro	Exploit
https://github.com/wren-lang/wren/	Product
https://github.com/wren-lang/wren/issues/1220	Exploit Issue Tracking Vendor Advisory
https://vuldb.com/?ctiid.348273	Permissions Required VDB Entry
https://vuldb.com/?id.348273	Third Party Advisory VDB Entry
https://vuldb.com/?submit.761312	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

cpe:2.3:a:wren:wren:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-01 10:16

Updated : 2026-03-05 01:50

NVD link : CVE-2026-3387

Mitre link : CVE-2026-3387

CVE.ORG link : CVE-2026-3387

JSON object : View

Products Affected

wren

wren

CWE

CWE-404

Improper Resource Shutdown or Release

CWE-476

NULL Pointer Dereference

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Se inform\u00f3 con antelaci\u00f3n del problema al proyecto, a trav\u00e9s de un informe de incidencias, pero a\u00fan no ha respondido."}], "lastModified": "2026-03-05T01:50:58.183", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:wren:wren:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5B3A76EF-D824-491F-B1BF-07C619DE6D6D", "versionEndIncluding": "0.4.0"}], "operator": "OR"}]}], "sourceIdentifier": "cna@vuldb.com"}