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.

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Access Vector Local

Access Complexity Low

Authentication Single

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR

This CVE is not in the KEV list.

Exploitation poc

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Wren-lang
  • Wren

No data.

No data.

References
Link Providers
https://github.com/oneafter/0122/blob/main/i1219/repro cve-icon cve-icon
https://github.com/wren-lang/wren/ cve-icon cve-icon
https://github.com/wren-lang/wren/issues/1219 cve-icon cve-icon
https://vuldb.com/?ctiid.348272 cve-icon cve-icon
https://vuldb.com/?id.348272 cve-icon cve-icon
https://vuldb.com/?submit.761306 cve-icon cve-icon
History

Mon, 02 Mar 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 02 Mar 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Wren-lang
Wren-lang wren
Vendors & Products Wren-lang
Wren-lang wren

Sun, 01 Mar 2026 08:45:00 +0000

Type Values Removed Values Added
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.
Title wren-lang wren wren_compiler.c emitOp out-of-bounds
Weaknesses CWE-119
CWE-125
References
Metrics cvssV2_0

{'score': 1.7, 'vector': 'AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 3.3, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published: 2026-03-01T08:32:11.407Z

Updated: 2026-03-02T19:34:45.550Z

Reserved: 2026-02-28T14:49:56.558Z

Link: CVE-2026-3386

cve-icon Vulnrichment

Updated: 2026-03-02T19:34:40.549Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-01T09:15:58.147

Modified: 2026-03-02T20:30:10.923

Link: CVE-2026-3386

cve-icon Redhat

No data.