CVE-2026-88378

QuickJS commit 04be24600 contains a heap out-of-bounds write condition in JS_ReadFunctionTag().

n/a n/a

CVSS

9.8Critical

ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 29 Sep 2026. Not in the KEV catalogCISA via CVE List

Exploit odds (EPSS)0.45%Chance of exploitation activity in the next 30 days, higher than 37% of CVEs. Scored 23 Oct 2026FIRST EPSS

Fixed inNone listedNo source names a fixed version yet

Published24 Sep 2026Updated 29 Sep 2026CVE List

What fixes it

No source in this snapshot names a fixed version.