CVE-2026-82520
8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| domainaware | parsedmarc | 0 < 11.0.1 | affected |
Weaknesses
- CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)
References
- https://github.com/domainaware/parsedmarc/security/advisories/GHSA-43qf-f35w-2x4r
- https://github.com/domainaware/parsedmarc/releases/tag/11.0.1
- https://www.vulncheck.com/advisories/parsedmarc-zip-bomb-dos-via-compressed-email-attachments
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