CVE-2026-3979

MEDIUM
2026-03-12 [email protected]
5.3
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 19:57 vuln.today
CVE Published
Mar 12, 2026 - 04:16 nvd
MEDIUM 5.3

Tags

Buffer Overflow Denial Of Service

Description

A flaw has been found in quickjs-ng quickjs up to 0.12.1. This affects the function js_iterator_concat_return of the file quickjs.c. This manipulation causes use after free. The attack requires local access. The exploit has been published and may be used. Patch name: daab4ad4bae4ef071ed0294618d6244e92def4cd. Applying a patch is the recommended action to fix this issue.

Analysis

Use-after-free vulnerability in quickjs-ng through version 0.12.1 allows local attackers to corrupt memory and potentially execute arbitrary code via the js_iterator_concat_return function in quickjs.c. Public exploit code exists for this vulnerability. …

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Remediation

Within 30 days: Identify affected systems running quickjs-ng quickjs and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +26
POC: 0

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CVE-2026-3979 vulnerability details – vuln.today
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