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TI-2026-02271 Aliases CVE-2026-2659GHSA-4mcw-fcqm-vqg3

Squirrel sqfuncstate.cpp PopTarget out-of-bounds

Priority MEDIUM 55CWE-119Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · None · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A vulnerability was determined in Squirrel up to 3.2. Affected by this vulnerability is the function SQFuncState::PopTarget of the file src/squirrel/squirrel/sqfuncstate.cpp. Executing a manipulation of the argument _target_stack can lead to out-of-bounds read. It is possible to launch the attack on the local host. 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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0024 15th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Squirrel3.0; 3.1; 3.2—No fix listedCNA
  • Squirrel Vendor— Affected 3.0; 3.1; 3.2 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:squirrel-lang:squirrel:*:*:*:*:*:*:*:*up to 3.2VulnerableSquirrel-lang
  • cpe:2.3:a:squirrel-lang:squirrel:*:*:*:*:*:*:*:* Versions up to 3.2 Vulnerable ·Squirrel-lang

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-2659
  2. 2026-10-03 Alias added: GHSA-4mcw-fcqm-vqg3

References

Exploit 2

  • TI-2021-18293 sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read… CVSS 3.1CRITICAL 10.0
  • TI-2026-08383 Squirrel Cnut File sqobject.cpp ReadObject heap-based overflow CVSS 4.0MEDIUM 4.8
  • TI-2026-02925 Squirrel sqstdrex.cpp sqstd_rex_newnode null pointer dereference CVSS 4.0MEDIUM 4.8
  • TI-2026-02924 Squirrel sqcompiler.cpp UnaryOP recursion CVSS 4.0MEDIUM 4.8
  • TI-2026-02273 Squirrel sqobject.h operator heap-based overflow CVSS 4.0MEDIUM 4.8
  • TI-2022-12528 Heap-based buffer overflow in sqbaselib.cpp in SQUIRREL 3.2 due to lack of a certain sq_reservestack call. CVSS 3.1CRITICAL 10.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences