CVE-2026-82520
highparsedmarc before 11.0.1 decompresses gzip and ZIP attachments in a single unbounded read with no limit on decompressed output size.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/domainaware/parsedmarc/releases/tag/11.0.1 disclosure@vulncheck.com
- https://github.com/domainaware/parsedmarc/security/advisories/GHSA-43qf-f35w-2x4r disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/parsedmarc-zip-bomb-dos-via-compressed-email-attachme... disclosure@vulncheck.com
- https://github.com/domainaware/parsedmarc/security/advisories/GHSA-43qf-f35w-2x4r 134c704f-9b21-4f2e-91b3-4a467353bcc0