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CVE-2026-110715— MuJS 1.3.6 before 1.3.9 Heap Out-of-Bounds Read/Write via Array.prototype.sort

Quick assessment

Affected
Artifex Software MuJS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MuJS 1.3.6 before 1.3.9 contains a heap out-of-bounds read and write vulnerability in Array.prototype.sort that allows attackers to corrupt memory by inflating a simple array's length. Attackers can supply JavaScript that enlarges a dense array's length and ca

CVSS 6.1 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
Artifex Software MuJS 1.3.6< 1.3.9 affected
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I. Basic Information for CVE-2026-110715

Vulnerability Information

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Vulnerability Title
MuJS 1.3.6 before 1.3.9 Heap Out-of-Bounds Read/Write via Array.prototype.sort
Source: CVE Program / CVE List V5
Vulnerability Description
MuJS 1.3.6 before 1.3.9 contains a heap out-of-bounds read and write vulnerability in Array.prototype.sort that allows attackers to corrupt memory by inflating a simple array's length. Attackers can supply JavaScript that enlarges a dense array's length and calls sort, causing Ap_sort_cmp and Ap_sort_swap to access slots past the buffer and crash the process.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Artifex Software MuJS 1.3.6 ~ 1.3.9 -

II. Public POCs for CVE-2026-110715

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III. Intelligence Information for CVE-2026-110715

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Other References for CVE-2026-110715 (3)

Other References for CVE-2026-110715 (3)

IV. Related Vulnerabilities

Same product: MuJS
Same vendor: Artifex Software
Same weakness: CWE-787

V. Comments for CVE-2026-110715

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