Squirrel up to 3.2 squirrel/sqobject.cpp SQFunctionProto::Load heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Squirrel up to 3.2. This impacts the function SQFunctionProto::Load of the file squirrel/sqobject.cpp. Such manipulation leads to heap-based overflow. This vulnerability is listed as CVE-2026-8261. The attack must be carried out locally. In addition, an exploit is available. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Squirrel up to 3.2. Affected by this issue is the function SQFunctionProto::Load of the file squirrel/sqobject.cpp. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-8261. The exploitation is known to be easy. Local access is required to approach this attack. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.9
VulDB Temp Score: 5.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/10/2026 Advisory disclosed
05/10/2026 +0 days VulDB entry created
05/10/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: 326
Status: Not defined

CVE: CVE-2026-8261 (🔒)
GCVE (CVE): GCVE-0-2026-8261
GCVE (VulDB): GCVE-100-362558
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/10/2026 17:28
Changes: 05/10/2026 17:28 (56)
Complete: 🔍
Submitter: biniam
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #809904: albertodemichelis squirrel 3.2 Heap-based Buffer Overflow (by biniam)

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