CVE-2026-88390

Published: Sep 24, 2026Modified: Sep 24, 2026Deferred

7.7

Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Exploitability: 2.5 / Impact: 5.2

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

An out-of-bounds write vulnerability in jslGetTokenValueAsString() in Espruino 2v29 (commit bffc6d0) allows crafted JavaScript input containing an overlong token to trigger a one-byte write beyond the JsLex.token buffer in RELEASE/NO_ASSERT builds. The out-of-bounds write corrupts the adjacent tokenValue pointer, resulting in memory corruption and potentially causing application crashes or denial of service.

Related CWEs

CWE-787

Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

References (3)

https://github.com/espruino/Espruino/commit/ecd7d43e084ba9aafa8245609347fe0f4383b38c

Source: cve@mitre.org

https://github.com/espruino/Espruino/issues/2744

Source: cve@mitre.org

https://github.com/espruino/Espruino/issues/2744

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.