CVE-2026-86716
Cesanta mJS mjs_tok.c skip_spaces_and_comments heap-based overflow
CVSS Score
7.3
EPSS Score
0.0%
EPSS Percentile
0th
A vulnerability was determined in Cesanta mJS up to 1.26. Affected is the function skip_spaces_and_comments of the file src/mjs_tok.c. Executing a manipulation can lead to heap-based buffer overflow. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.
| CWE | CWE-122 CWE-119 |
| Vendor | cesanta |
| Product | mjs |
| Published | Sep 8, 2026 |
| Last Updated | Sep 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Cesanta / mJS
1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 1.26
References
vuldb.com: https://vuldb.com/vuln/399773 vuldb.com: https://vuldb.com/vuln/399773/cti vuldb.com: https://vuldb.com/cve/CVE-2026-86716 vuldb.com: https://vuldb.com/submit/910881 vuldb.com: https://vuldb.com/submit/910882 github.com: https://github.com/cesanta/mjs/issues/324 github.com: https://github.com/cesanta/mjs/
Credits
🔍 lrrh (VulDB User) VulDB CNA Team