CVE-2026-88388 Memory corruption in n/a
A remote attacker can trigger a stack-based buffer overflow in Espruino's error handling, potentially leading to code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-88388?
CVE-2026-88388 is a high-severity memory corruption vulnerability in n/a, published on 24 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Espruino 2v29 (commit bffc6d0) contains a stack-based buffer overflow vulnerability in the JavaScript error stack-trace handling path on 64-bit builds. A remote attacker can supply JavaScript input that triggers an exception and reaches jslPrintTokenLineMarker(), which passes the address of a 4-byte int column variable to jsvGetLineAndCol() as a size_t pointer. jsvGetLineAndCol() performs an 8-byte write through the mismatched pointer, overwriting adjacent stack memory.
Weakness: CWE-121
Which versions are affected by CVE-2026-88388?
How do I fix CVE-2026-88388?
No fix has been published for CVE-2026-88388 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-88388 being exploited?
There is no known exploitation of CVE-2026-88388 in the wild and no public exploit code.
Sources
Also known as GHSA-c28p-5mg4-7q2w.