CVE-2026-3979: quickjs-ng quickjs quickjs.c js_iterator_concat_return use after free
quickjs-ng · quickjs
Vendor fix available · Affected: quickjs-ng · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 2% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- quickjs-ng · quickjs0.12.0; 0.12.1
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- quickjs-ng
- Published
- March 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-3979 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.