MEDIUM 6.9 NVD
CVE-2026-110715
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
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.
References
- https://codeberg.org/ccxvii/mujs
- https://codeberg.org/ccxvii/mujs/commit/32064e10caa45e68fc87331ca53d042049cc9396
- https://codeberg.org/ccxvii/mujs/src/commit/307f18c4216420f2f56e22d8e7040baa39a6304a/jsarr
- https://hackmd.io/@haind-pwn/mujs-array-length-flat-oob
- https://mujs.com/downloads/
This medium severity vulnerability with a CVSS score of 6.9 was published on 2026-10-14 via NVD.
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