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CVE-2026-44844— eml_parser: Recursion DoS via nested message/rfc822 attachments

Quick assessment

Affected
GOVCERT-LU eml_parser
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.

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。

AI Predicted 5.3 Difficulty: Easy EPSS 0.40% · P32

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProduct Version RangeStatus
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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的递归
Source: CVE Program / CVE List V5
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

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III. Intelligence Information for CVE-2026-44844

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Vendor Advisories for CVE-2026-44844 (1)

IV. Related Vulnerabilities

Same product: eml_parser
Same vendor: GOVCERT-LU
Same weakness: CWE-674

V. Comments for CVE-2026-44844

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