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TI-2026-56883 Aliases CVE-2026-82520

parsedmarc < 11.0.1 Zip Bomb DoS via Compressed Email Attachments

Priority HIGH 77CWE-409Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00784 56th percentileScored 2026-11-07
Fix Fixed parsedmarc (domainaware): 11.0.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
domainawareparsedmarcbefore 11.0.111.0.1Patch availableCNA
  • parsedmarc Vendordomainaware Affected before 11.0.1 Fixed in 11.0.1 Patch available CNA

Remediation

  • Fix · CNA parsedmarc (domainaware) Fixed in 11.0.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    domainaware parsedmarc 11.0.1

    2 records Highest priority Priority HIGH 1 HIGH, 1 LOW

    Other records, highest priority first

    • TI-2026-56884 parsedmarc 9.0.6 < 11.0.1 Path Traversal via Forensic Report SubjectPriority LOW 34
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-82520

References

Patch 1

Advisory 1

  • TI-2026-56884 parsedmarc 9.0.6 < 11.0.1 Path Traversal via Forensic Report Subject CVSS 4.0MEDIUM 6.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences