CVE-2026-8258

MEDIUM

Squirrel sqstdstring.cpp validate_format stack-based overflow

Title source: cna
STIX 2.1

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 (5)

Core 5
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-362555 | Squirrel sqstdstring.cpp validate_format stack-based overflow
https://vuldb.com/vuln/362555
Signature, Permissions Required signature permissions-required
VDB-362555 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/362555/cti
Third Party Advisory third-party-advisory
Submit #809873 | albertodemichelis squirrel 3.2 Stack-based Buffer Overflow
https://vuldb.com/submit/809873

Scores

CVSS v3 5.3
EPSS 0.0001
EPSS Percentile 2.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-119 CWE-121
Status published
Products (3)
None/Squirrel 3.0
None/Squirrel 3.1
None/Squirrel 3.2
Published May 11, 2026
Tracked Since May 11, 2026