Skip to content

A vulnerability was identified in wren-lang wren up to 0...

Moderate severity Unreviewed Published Feb 21, 2026 to the GitHub Advisory Database • Updated Feb 21, 2026

Package

No package listed— Suggest a package

Affected versions

Unknown

Patched versions

Unknown

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.

References

Published by the National Vulnerability Database Feb 20, 2026
Published to the GitHub Advisory Database Feb 21, 2026
Last updated Feb 21, 2026

Severity

Moderate

EPSS score

Weaknesses

Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. Learn more on MITRE.

CVE ID

CVE-2026-2858

GHSA ID

GHSA-vm4c-6g35-79xf

Source code

No known source code

Dependabot alerts are not supported on this advisory because it does not have a package from a supported ecosystem with an affected and fixed version.

Learn more about GitHub language support

Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.