CVE-2026-8261: Squirrel sqobject.cpp Load heap-based overflow

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-11 · updated 2026-07-23
Weakness: CWE-119

Description

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 exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

Squirrel: 3.0, 3.1, 3.2

References

https://github.com/albertodemichelis/squirrel/issues/326
https://github.com/biniamf/pocs/tree/main/squirrel-sqobject-functionproto-load-intovf-lineinfos
https://vuldb.com/submit/809904
https://vuldb.com/vuln/362558
https://vuldb.com/vuln/362558/cti
https://github.com/albertodemichelis/squirrel/issues/326
https://vuldb.com/submit/809904

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