CVE-2026-82520: Domainaware Parsedmarc

High severity, CVSS 7.5. EPSS: 0.8% chance of exploitation in the next 30 days.

parsedmarc before 11.0.1 decompresses gzip and ZIP attachments in a single unbounded read with no limit on decompressed output size. Because parsedmarc automatically processes incoming DMARC report emails without user interaction, an unauthenticated remote attacker can send a crafted email with a highly compressed attachment to the monitored mailbox, causing the parsedmarc process to allocate memory proportional to the uncompressed size and exhaust available RAM.

Affected products

• Domainaware Parsedmarc: before 11.0.1 (fixed in 11.0.1)

Published 2026-09-03. Last modified 2026-09-24.