by Kastro
Paper/Archive/CVE-2026-88378

CVE-2026-88378

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

EPSS 0.6%public exploitCVSS 9.8
critical.is priorityof 100
49
CVSS 9.8 (ADP)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 46.7.467 × 209.3Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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

Affected

ProductAffectedFixed inSource
n/an/a–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/bellard/quickjs/issues/549refgithub.com/bellard/quickjs/pull/553refgithub.com/bellard/quickjs/pull/553/changes/42526037cfc0b2a94a875c0de0f4bbeaf597a542