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Vulnerability Intelligence

Vulnerability IntelligenceCVE-2026-3387

CVE-2026-3387

MEDIUM4.8

wren-lang wren wren_compiler.c getByteCountForArguments null pointer dereference

Published Mar 1, 2026

Modified 2 weeks ago

Details

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.

References

https://github.com/oneafter/0122/blob/main/i1220/repro

https://github.com/wren-lang/wren/

https://github.com/wren-lang/wren/issues/1220

https://vuldb.com/?ctiid.348273

https://vuldb.com/?id.348273

https://vuldb.com/?submit.761312

https://www.cve.org/CVERecord?id=CVE-2026-3387

CVSS Analysis

CVSS v4.0

4.8

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Attack Requirements

NoneAT:N

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Vulnerable System

Vuln. Confidentiality

NoneVC:N

Vuln. Integrity

NoneVI:N

Vuln. Availability

LowVA:L

Subsequent System

Subseq. Confidentiality

NoneSC:N

Subseq. Integrity

NoneSI:N

Subseq. Availability

NoneSA:N

4.8/CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Weakness Type (CWE)

Memory Safety

NULL Pointer Dereference

Resource Management

Improper Resource Shutdown

Ecosystems

Timeline

PublishedMar 1, 2026

ModifiedMar 2, 2026

CVE-2026-3387 | Mondoo Vulnerability Intelligence