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CVE-2026-82520— parsedmarc < 11.0.1 Zip Bomb DoS via Compressed Email Attachments

Quick assessment

Affected
domainaware parsedmarc
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

domainaware parsedmarc是domainaware组织的一款解析DMARC报告的邮件安全分析工具。 domainaware parsedmarc 11.0.1之前版本存在资源管理错误漏洞，该漏洞源于解压gzip和ZIP附件时在单个无界读取中未限制解压输出大小，可能导致未经身份验证的远程攻击者向受监控邮箱发送带有高度压缩附件的特制邮件，使parsedmarc进程分配与解压大小成比例的内存，耗尽可用RAM。

CVSS 7.5 · High EPSS 0.78% · P55

Possible ATT&CK Techniques 1 AI

T1487

Affected Version Matrix 1

VendorProduct Version RangeStatus
domainaware parsedmarc < 11.0.1 affected
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I. Basic Information for CVE-2026-82520

Vulnerability Information
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Vulnerability Title
parsedmarc < 11.0.1 Zip Bomb DoS via Compressed Email Attachments
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对高度压缩数据的处理不恰当(数据放大攻击)
Source: CVE Program / CVE List V5
Vulnerability Title
domainaware parsedmarc 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
domainaware parsedmarc是domainaware组织的一款解析DMARC报告的邮件安全分析工具。 domainaware parsedmarc 11.0.1之前版本存在资源管理错误漏洞，该漏洞源于解压gzip和ZIP附件时在单个无界读取中未限制解压输出大小，可能导致未经身份验证的远程攻击者向受监控邮箱发送带有高度压缩附件的特制邮件，使parsedmarc进程分配与解压大小成比例的内存，耗尽可用RAM。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
domainaware parsedmarc 0 ~ 11.0.1 -

II. Public POCs for CVE-2026-82520

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III. Intelligence Information for CVE-2026-82520

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Vendor Advisories for CVE-2026-82520 (2)

Vendor Pages for CVE-2026-82520 (1)

IV. Related Vulnerabilities

Same product: parsedmarc
Same vendor: domainaware
Same weakness: CWE-409

V. Comments for CVE-2026-82520

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