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TI-2026-00603 Aliases CVE-2026-0821GHSA-rcpp-qhfh-r47v

quickjs-ng quickjs quickjs.c js_typed_array_constructor heap-based overflow

Priority HIGH 70CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A vulnerability was determined in quickjs-ng quickjs up to 0.11.0. This vulnerability affects the function js_typed_array_constructor of the file quickjs.c. Executing a manipulation can lead to heap-based buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. This patch is called c5d80831e51e48a83eab16ea867be87f091783c5. A patch should be applied to remediate this issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0052 44th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
quickjs-ngquickjs0.1; 0.2; 0.3; 0.4; 0.5; 0.6; 0.7; 0.8; 0.9; 0.10; 0.11.0—No fix listedCNA
  • quickjs Vendorquickjs-ng Affected 0.1; 0.2; 0.3; 0.4; 0.5; 0.6; 0.7; 0.8; 0.9; 0.10; 0.11.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:quickjs-ng:quickjs:*:*:*:*:*:*:*:*up to 0.11.0Vulnerablequickjs-ng
  • cpe:2.3:a:quickjs-ng:quickjs:*:*:*:*:*:*:*:* Versions up to 0.11.0 Vulnerable ·quickjs-ng

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-0821
  2. 2026-10-03 Alias added: GHSA-rcpp-qhfh-r47v

References

Exploit 2

Patch 1

Other 2

  • TI-2025-29366 quickjs-ng through 0.9.0 has an incorrect size calculation in JS_ReadBigInt for a BigInt… CVSS 3.1HIGH 8.4
  • TI-2025-29365 Resource allocation without limits in QuickJS CVSS 3.1HIGH 7.8
  • TI-2026-00873 quickjs-ng quickjs quickjs.c js_typed_array_constructor_ta heap-based overflow CVSS 4.0MEDIUM 5.3
  • TI-2026-00872 quickjs-ng quickjs Atomics Ops quickjs.c use after free CVSS 4.0MEDIUM 5.3
  • TI-2026-00604 quickjs-ng quickjs quickjs.c js_typed_array_sort heap-based overflow CVSS 4.0MEDIUM 5.3
  • TI-2024-12923 quickjs-ng QuickJS qjs quickjs.c JS_GetRuntime stack-based overflow CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences