CVE-2026-2657 MEDIUM

CVE-2026-2657: wren-lang wren Error Message wren_compiler.c printError stack-based overflow

Vendor Wren-Lang
Product wren
Weakness CWE-121
Published February 18, 2026
Last update February 23, 2026

CVSS base score

4.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

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

What the vulnerability does

01Description

A vulnerability has been found in wren-lang wren up to 0.4.0. This impacts the function printError of the file src/vm/wren_compiler.c of the component Error Message Handler. Such manipulation leads to stack-based buffer overflow. An attack has to be approached locally. 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.

Key dates

02Disclosure timeline

February 18, 2026 CVE published
February 23, 2026 Record updated