6.9

CVE-2026-110715: artifex software mujs Out-of-bounds Write

CVSS: 6.9v4.0MediumDeferred
AliasesUBUNTU-CVE-2026-110715DEBIAN-CVE-2026-110715
Published 14-10-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-110715 is a medium (CVSS 6.9) Out-of-bounds Write vulnerability in artifex software mujs. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.1% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
38/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.9/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.17%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 14-10-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

7 scores · 4 sources · 2 versions

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

15-10-202619-10-2026
EPSS score
0.17%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (hackmd.io)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Artifex software1 product
  • mujs≥ 1.3.6, < 1.3.9
Debian1 product
  • mujsAll versions (No fix recorded)
Ubuntu1 product
  • mujsAll versions (No fix recorded)

3 vendors · 3 products

References

9 links