Description
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.
References (6)
Core 6
Core References
Permissions Required, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.346455
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.346455
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.752791
Issue Tracking issue-tracking
https://github.com/wren-lang/wren/issues/1221
Various Sources exploit
https://github.com/oneafter/0122/blob/main/i1221/repro
Scores
CVSS v3
3.3
EPSS
0.0001
EPSS Percentile
2.0%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-119
CWE-121
Status
published
Products (1)
wren/wren
< 0.4.0
Published
Feb 18, 2026
Tracked Since
Feb 18, 2026