What is CVE-2026-8261?

CVE-2026-8261 is a medium-severity vulnerability in Squirrel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.9/10. Published 2026-05-11.

How severe is CVE-2026-8261?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Buffer overflow in Squirrel

CVE-2026-8261

A vulnerability was determined in Squirrel up to 3.2. This affects the function SQFunctionProto::Load of the file squirrel/sqobject.cpp. This manipulation causes heap-based buffer overflow. The attack is restricted to local execution. The…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (6.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

N/a Squirrel — versions 3.0, 3.1, 3.2

Weakness classification (CWE)

References

cna@vuldb.com (issue-tracking)
cna@vuldb.com (exploit)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)

Frequently asked questions

What is CVE-2026-8261?: CVE-2026-8261 is a medium-severity vulnerability in Squirrel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.9/10. Published 2026-05-11.
How severe is CVE-2026-8261?: Medium severity. CVSS v3 base score is 5.9 out of 10.