CVE-2026-8258

Summary

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.

Affected Software

Weaknesses

• CWE-121: Stack-based Buffer Overflow
• CWE-119: Memory Corruption

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

Additional References

• https://github.com/albertodemichelis/squirrel/issues/325

References

• https://vuldb.com/vuln/362555
• https://vuldb.com/vuln/362555/cti
• https://vuldb.com/submit/809873
• https://github.com/albertodemichelis/squirrel/issues/325
• https://github.com/biniamf/pocs/tree/main/squirrel-validate_format-memcpy-oob

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