CVE-2026-3979 (GCVE-0-2026-3979)
Vulnerability from cvelistv5 – Published: 2026-03-12 03:32 – Updated: 2026-03-12 16:16 X_Open Source
VLAI
EPSS
VEX
Title
quickjs-ng quickjs quickjs.c js_iterator_concat_return use after free
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-12 13:45 UTC
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.350414 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.350414 | signaturepermissions-required |
| https://vuldb.com/?submit.769600 | third-party-advisory |
| https://github.com/quickjs-ng/quickjs/issues/1368 | issue-tracking |
| https://github.com/quickjs-ng/quickjs/pull/1370 | issue-trackingpatch |
| https://github.com/quickjs-ng/quickjs/issues/1368… | exploitissue-tracking |
| https://github.com/quickjs-ng/quickjs/commit/daab… | patch |
| https://github.com/quickjs-ng/quickjs/ | product |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| quickjs-ng | quickjs |
Affected:
0.12.0
Affected: 0.12.1 |
guessed |
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
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