CVE-2026-82520 (GCVE-0-2026-82520)
Vulnerability from cvelistv5 – Published: 2026-09-03 20:39 – Updated: 2026-11-08 14:09 X_Open Source
VLAI
EPSS
VEX
Title
parsedmarc < 11.0.1 Zip Bomb DoS via Compressed Email Attachments
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.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 18:35 UTC
CWE
- CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
Assigner
VulnCheck
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/domainaware/parsedmarc/securit… | vendor-advisory |
| https://github.com/domainaware/parsedmarc/release… | release-notespatch |
| https://www.vulncheck.com/advisories/parsedmarc-z… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| domainaware | parsedmarc |
Affected:
0 , < 11.0.1
(semver)
|
Date Public
2026-09-03 00:00
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