CVE-2026-3387

low-risk
Published 2026-03-01

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.

Do I need to act?

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0.02% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
3
CVSS 3.3/10 Low
LOCAL / LOW complexity

Affected Products (1)

Wren

Affected Vendors

Wren

References (6)

Exploit https://github.com/oneafter/0122/blob/main/i1220/repro
Product https://github.com/wren-lang/wren/
Exploit https://github.com/wren-lang/wren/issues/1220
Permissions Required https://vuldb.com/?ctiid.348273
Third Party Advisory https://vuldb.com/?id.348273
Third Party Advisory https://vuldb.com/?submit.761312
18
/ 100
low-risk
Severity 13/34 · Low
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal