CVE-2026-86716
highA vulnerability was determined in Cesanta mJS up to 1.26.
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.
CVSS
7.3
7.3 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L Severity source: NVD CVSS v3.1 (cna@vuldb.com)
Timeline (UTC)
Published: 2026-09-08 19:20
Modified: 2026-09-08 20:18
NVD status: Deferred
Last synced 1 day ago
Verified against the source API 2026-10-27 06:52 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/cesanta/mjs/ cna@vuldb.com
- https://github.com/cesanta/mjs/issues/324 cna@vuldb.com
- https://vuldb.com/cve/CVE-2026-86716 cna@vuldb.com
- https://vuldb.com/submit/910881 cna@vuldb.com
- https://vuldb.com/submit/910882 cna@vuldb.com
- https://vuldb.com/vuln/399773 cna@vuldb.com
- https://vuldb.com/vuln/399773/cti cna@vuldb.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:52 UTC · record ↗