Description
A weakness has been identified in QuickJS up to eb2c89087def1829ed99630cb14b549d7a98408c. This affects the function js_array_buffer_slice of the file quickjs.c. This manipulation causes buffer over-read. The attack is restricted to local execution. The exploit has been made available to the public and could be exploited. This product adopts a rolling release strategy to maintain continuous delivery Patch name: c6fe5a98fd3ef3b7064e6e0145dfebfe12449fea. To fix this issue, it is recommended to deploy a patch.
Affected products
bellard: quickjs
References10
- github.com/bellard/quickjs/commit/c6fe5a98fd3ef3b7064e6e0145dfe… Patch
- github.com/bellard/quickjs/issues/451 ExploitIssue Tracking
- github.com/bellard/quickjs/issues/451#issue-3533698042 ExploitIssue Tracking
- github.com/bellard/quickjs/issues/451#issuecomment-3481807558 ExploitIssue Tracking
- vuldb.com/?submit.678850 ExploitThird Party AdvisoryVDB Entry
- github.com/bellard/quickjs/issues/451 ExploitIssue Tracking
- github.com/bellard/quickjs/issues/451#issue-3533698042 ExploitIssue Tracking
- github.com/bellard/quickjs/issues/451#issuecomment-3481807558 ExploitIssue Tracking
- vuldb.com/?ctiid.331268 Permissions RequiredVDB Entry
- vuldb.com/?id.331268 Third Party AdvisoryVDB Entry
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 4.0
-
1.9
LOW
Score source: CNA
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 12 · as of 10 November 2026
- CWE
- CWE-119CWE-126CWE-125
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.