CVE-2026-3386

wren-lang wren wren_compiler.c emitOp out-of-bounds

HIGH
7.1
CVSS Score
Published: March 1, 2026 at 08:32 AM UTC
Updated: June 17, 2026 at 10:43 AM UTC
2 products affected across 2 vendorsWrenWren

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Severity
HIGH7.1
Exploit prediction
EPSS 0.2%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (6)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/?id.348272
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/?ctiid.348272
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/?submit.761306
Issue TrackingExploitVendor Advisory
Source: cverecord
https://github.com/wren-lang/wren/issues/1219
Product
Source: cverecord
https://github.com/wren-lang/wren/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-125CWE-119

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