Description
A flaw has been found in wren-lang wren up to 0.4.0. Affected by this vulnerability is the function emitOp of the file src/vm/wren_compiler.c. This manipulation causes out-of-bounds read. It is possible to launch the attack on the local host. The exploit has been published 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.348272
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.348272
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.761306
Issue Tracking issue-tracking
https://github.com/wren-lang/wren/issues/1219
Third Party Advisory exploit
https://github.com/oneafter/0122/blob/main/i1219/repro
Scores
CVSS v3
3.3
EPSS
0.0017
EPSS Percentile
6.7%
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-125
Status
published
Products (1)
wren/wren
< 0.4.0
Published
Mar 01, 2026
Tracked Since
Mar 01, 2026