GOVCERT-LU eml_parser up to 3.0.0 EmlParser.get_raw_body_text recursion

Summaryinfo

A vulnerability classified as problematic has been found in GOVCERT-LU eml_parser up to 3.0.0. Affected by this vulnerability is the function EmlParser.get_raw_body_text. Performing a manipulation results in recursion. This vulnerability is known as CVE-2026-44844. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in GOVCERT-LU eml_parser up to 3.0.0. This affects the function EmlParser.get_raw_body_text. The manipulation with an unknown input leads to a recursion vulnerability. CWE is classifying the issue as CWE-674. The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. This is going to have an impact on availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-44844 since 05/07/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 3.0.1 eliminates this vulnerability.

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Productinfo

Vendor

• GOVCERT-LU

Name

• eml_parser

Version

• 3.0

Website

• Product: https://github.com/GOVCERT-LU/eml_parser/

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