CVE-2021-26308: Marc Project Marc

High severity, CVSS 7.5. EPSS: 1.5% chance of exploitation in the next 30 days.

An issue was discovered in the marc crate before 2.0.0 for Rust. A user-provided Read implementation can gain access to the old contents of newly allocated memory, violating soundness.

Affected products

• Marc Project Marc: before 2.0.0 (fixed in 2.0.0)

Published 2021-01-29. Last modified 2026-06-17.