CVE-2026-8258

medium

Description

A flaw has been found in Squirrel up to 3.2. Impacted is the function validate_format in the library sqstdlib/sqstdstring.cpp. Executing a manipulation can lead to stack-based buffer overflow. The attack can only be executed locally. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

References

https://vuldb.com/vuln/362555/cti

https://vuldb.com/vuln/362555

https://vuldb.com/submit/809873

https://github.com/biniamf/pocs/tree/main/squirrel-validate_format-memcpy-oob

https://github.com/albertodemichelis/squirrel/issues/325

Details

Source: Mitre, NVD

Published: 2026-05-11

Updated: 2026-05-11

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:L/AC:L/Au:S/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 5.3

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

Severity: Medium

CVSS v4

Base Score: 4.8

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00013