CVE catalog
CVE-2026-88362
MuJS e892c9fdb contains an incorrect numeric conversion vulnerability in jsR_isindex() in jsrun.c. A specially crafted JavaScript input containing an excessively large numeric array index can cause an
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.42% · Oct 25, 2026
MuJS e892c9fdb contains an incorrect numeric conversion vulnerability in jsR_isindex() in jsrun.c. A specially crafted JavaScript input containing an excessively large numeric array index can cause an out-of-range floating-point value to be converted to an integer without proper range validation. This results in undefined behavior and can cause process termination, leading to denial of service.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | mujs | sid | 1.3.11-1 | fixed |
| Debian | mujs | forky | 1.3.10-2 | fixed |
| Debian | mujs | trixie | 1.3.6-1 | vulnerable |
| Debian | mujs | bookworm | 1.3.2-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | mujs | source | sid | 1.3.10-2 | not yet assigned | Not reported | [1149057] |
| Debian | mujs | source | forky | 1.3.10-2 | not yet assigned | Not reported | [1149057] |
| Debian | mujs | source | trixie | (unfixed) | not yet assigned | Not reported | [1149057] |
| Debian | mujs | source | bookworm | (unfixed) | not yet assigned | Not reported | [1149057] |
Notes
[trixie] mujs: Minor issue [bookworm] mujs: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libmujs2]Affected
Source package: [mujs]
Details (2)
1.3.2-1· amd64 · bookwormAffected
nvd · mujs · debian · bookworm; nvd · mujs · debian · 12
1.3.2-1· arm64 · bookwormAffected
nvd · mujs · debian · bookworm; nvd · mujs · debian · 12
- [libmujs-dev]Affected
Source package: [mujs]
Details (2)
1.3.2-1· amd64 · bookwormAffected
nvd · mujs · debian · bookworm; nvd · mujs · debian · 12
1.3.2-1· arm64 · bookwormAffected
nvd · mujs · debian · bookworm; nvd · mujs · debian · 12
- [mujs]Affected
Details (2)
1.3.2-1· amd64 · bookwormAffected
nvd · mujs · debian · bookworm; nvd · mujs · debian · 12
1.3.2-1· arm64 · bookwormAffected
nvd · mujs · debian · bookworm; nvd · mujs · debian · 12
[Debian 13 (Trixie)]
- [libmujs3]Affected
Source package: [mujs]
Details (2)
1.3.6-1· amd64 · trixieAffected
nvd · mujs · debian · 13
1.3.6-1· arm64 · trixieAffected
nvd · mujs · debian · 13
- [libmujs-dev]Affected
Source package: [mujs]
Details (2)
1.3.6-1· amd64 · trixieAffected
nvd · mujs · debian · 13
1.3.6-1· arm64 · trixieAffected
nvd · mujs · debian · 13
- [mujs]Affected
Details (2)
1.3.6-1· amd64 · trixieAffected
nvd · mujs · debian · 13
1.3.6-1· arm64 · trixieAffected
nvd · mujs · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-88362]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-88362]
- [https://security-tracker.debian.org/tracker/CVE-2026-88362]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88362.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]