CVE-2026-3387

LOW 3.3

wren-lang wren wren_compiler.c getByteCountForArguments null pointer dereference

CVSS Score

3.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-476 CWE-404
Vendor	wren-lang
Product	wren
Published	Mar 1, 2026
Last Updated	Mar 2, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

wren-lang / wren

0.1 0.2 0.3 0.4.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/?id.348273 vuldb.com: https://vuldb.com/?ctiid.348273 vuldb.com: https://vuldb.com/?submit.761312 github.com: https://github.com/wren-lang/wren/issues/1220 github.com: https://github.com/oneafter/0122/blob/main/i1220/repro github.com: https://github.com/wren-lang/wren/

Credits

🔍 Oneafter (VulDB User)