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I. Basic Information for CVE-2026-2858
Vulnerability Information

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Vulnerability Title
wren-lang wren Source File wren_compiler.c peekChar out-of-bounds
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was identified in wren-lang wren up to 0.4.0. This affects the function peekChar of the file src/vm/wren_compiler.c of the component Source File Parser. Such manipulation leads to out-of-bounds read. The attack needs to be performed locally. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
wren 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
wren是Wren开源的一个并发脚本语言。 wren 0.4.0及之前版本存在缓冲区错误漏洞,该漏洞源于src/vm/wren_compiler.c文件中peekChar函数存在越界读取。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
wren-langwren 0.1 -
II. Public POCs for CVE-2026-2858
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III. Intelligence Information for CVE-2026-2858
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IV. Related Vulnerabilities
V. Comments for CVE-2026-2858

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