CVE-2026-44844— eml_parser: Recursion DoS via nested message/rfc822 attachments
Possible ATT&CK Techniques 1AI
T1203 · Exploitation for Client ExecutionAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| GOVCERT-LU | eml_parser | < 3.0.1 | affected |
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I. Basic Information for CVE-2026-44844
Vulnerability Information
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Vulnerability Title
eml_parser: Recursion DoS via nested message/rfc822 attachments
Source: NVD (National Vulnerability Database)
Vulnerability Description
eml_parser serves as a python module for parsing eml files and returning various information found in the e-mail as well as computed information. Prior to 3.0.1, EmlParser.get_raw_body_text() recurses unconditionally for every nested message/rfc822 attachment without any depth limit. An attacker who can supply a badly crafted EML file with approximately 120 nested message/rfc822 parts triggers an unhandled RecursionError and aborts parsing of the message. A 12 KB EML file is enough to crash a worker. Though this causes the parser to crash, it is an unlikely scenario as the suggested EML that crashes the parser would not pass basic RFC compliance tests. This vulnerability is fixed in 3.0.1.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未经控制的递归
Source: NVD (National Vulnerability Database)
Vulnerability Title
eml_parser 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
eml_parser是GOVCERT.LU开源的一个解析电子邮件文件的Python库。 eml_parser 3.0.1之前版本存在安全漏洞，该漏洞源于EmlParser.get_raw_body_text()对嵌套的message/rfc822附件进行无深度限制的递归处理，攻击者可通过提供包含约120层嵌套的恶意EML文件触发未处理的RecursionError，导致解析崩溃。
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 |
|---|---|---|---|---|
| GOVCERT-LU | eml_parser | < 3.0.1 | - |
II. Public POCs for CVE-2026-44844
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-44844 (1)
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V. Comments for CVE-2026-44844
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