- Critical 9.8
CVE-2026-88378
QuickJS commit 04be24600 contains a heap out-of-bounds write condition in JS_ReadFunctionTag().
Scores
The facts
- Published
- 24 September 2026
- Last changed
- 29 September 2026
- NVD status
- Awaiting Analysis
- Severity
- Critical, CVSS 9.8 out of 10 (version 3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- Known exploited
- Not in the CISA Known Exploited Vulnerabilities catalogue in this build.
- EPSS
- 0.4% chance of exploitation activity in the next 30 days (percentile 38).
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