CVE-2020-23914: Cpp-Peglib Project Cpp-Peglib

Medium severity, CVSS 5.5. EPSS: 0.9% chance of exploitation in the next 30 days.

An issue was discovered in cpp-peglib through v0.1.12. A NULL pointer dereference exists in the peg::AstOptimizer::optimize() located in peglib.h. It allows an attacker to cause Denial of Service.

Affected products

• Cpp-Peglib Project Cpp-Peglib: up to and including 0.1.12

Published 2021-04-21. Last modified 2026-06-17.