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Vulnerabilities

Vulnerability · 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 a simple array's len

Published Oct 14, 2026 · catalog updated Oct 17, 2026 · MuJS 1.3.6 before 1.3.9

Check if you run it

No confirmed exploitation is on record for CVE-2026-110715. EPSS is 0.17%. Act only if a listed version of MuJS 1.3.6 before 1.3.9 is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (MuJS 1.3.6 before 1.3.9).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.17%
Remediation
Advisory link
Affected products
Debian:12 mujs · Debian:13 mujs · Debian:14 mujs

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 mujs1.3.10-1, 1.3.10-2, 1.3.2-1
  • Debian:13 mujs1.3.10-1, 1.3.10-2, 1.3.6-1
  • Debian:14 mujs1.3.10-1, 1.3.10-2, 1.3.6-1

How to fix CVE-2026-110715

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-110715. EPSS is 0.17%. Act only if a listed version of MuJS 1.3.6 before 1.3.9 is installed.

Which versions are affected?

Compare what you have installed with 1.3.10-1, 1.3.10-2, 1.3.2-1, 1.3.10-1, 1.3.10-2, 1.3.6-1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-787: Out-of-bounds Write. EPSS 0.17%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 14, 2026 · NIST NVD

    Detected

    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.

  2. Oct 14, 2026 · NIST NVD

    Updated

    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.

  3. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-110715

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-110715

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-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 a simple array's length. Attackers can supply JavaScript that enlarges a dense array's length and calls sort, causing Ap

    nvd.nist.gov
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-110715
    osv.dev

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.