# CVE-2026-44844: GOVCERT-LU eml_parser uncontrolled recursion in get_raw_body_text

Source: https://junglewise.ai/threats/cve-2026-44844-govcert-lu-eml-parser-uncontrolled-recursion-in-get-raw-body-text  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-26. Updated: 2026-06-09  
License: CC BY 4.0 with a link back

CVE-2026-44844 · Severity: medium · CVSS 4 · Published 2026-05-26

A vulnerability in the eml_parser library, which is used to process email files, can allow an attacker to crash the software. By sending a specially crafted email with many layers of nested attachments, an attacker can cause the system to stop responding or restart. This can disrupt email processing pipelines and lead to a denial of service for organizations relying on this tool.

Technologies: [GOVCERT-LU Eml Parser](https://junglewise.ai/threats/technologies/eml-parser), [eml-parser (PyPI)](https://junglewise.ai/threats/technologies/pypi-eml-parser). Vendors: [GOVCERT-LU](https://junglewise.ai/threats/vendors/govcert-lu), [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2026-44844 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-44844 being exploited in the wild.

**How severe is CVE-2026-44844?** Medium severity, with a CVSS score of 4, published 26 May 2026.

**Which products and versions are affected?** GOVCERT-LU Eml Parser <= 3.0.0; eml-parser (PyPI) ECOSYSTEM:introduced=0,fixed=3.0.1.

**Is there a fix for CVE-2026-44844?** Yes. eml-parser (PyPI): upgrade to 3.0.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-44844 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-44844?** Check whether you run GOVCERT-LU Eml Parser or eml-parser (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- eml-parser (PyPI): upgrade to 3.0.1 or later

  ```sh
  pip install "eml-parser>=3.0.1"
  ```


## Technical details

The EmlParser.get_raw_body_text() function in eml_parser/parser.py fails to implement a recursion depth limit when processing nested 'message/rfc822' attachments. An attacker can provide a crafted EML file (approximately 12 KB) with roughly 120 nested levels to exhaust CPython's default recursion limit, triggering an unhandled RecursionError. This crash propagates out of decode_email_bytes(), aborting the entire parsing process. The vulnerability is exploitable via the network without authentication in systems that ingest external emails. A fix is available in version 3.0.1 which implements recursion depth checks.

## Affected products

- GOVCERT-LU eml_parser <= 3.0.0

## Identifiers

- CVE-2026-44844
- GHSA-g47v-rwmh-r9f8
- PYSEC-2026-2468

## Timeline

- 2026-05-05: disclosed: Vulnerability reported to GOVCERT-LU/eml_parser
- 2026-05-08: advisory: GitHub Advisory GHSA-g47v-rwmh-r9f8 published
- 2026-05-26: other: NVD published CVE-2026-44844
- 2026-06-08: other: Advisory last updated

## References

- [https://api.github.com/users/Sebasteuo](https://api.github.com/users/Sebasteuo)
- [https://github.com/Sebasteuo](https://github.com/Sebasteuo)
- [https://api.github.com/users/Sebasteuo/gists%7B/gist_id%7D](https://api.github.com/users/Sebasteuo/gists%7B/gist_id%7D)
- [https://api.github.com/users/Sebasteuo/repos](https://api.github.com/users/Sebasteuo/repos)
- [https://avatars.githubusercontent.com/u/37353257?v=4](https://avatars.githubusercontent.com/u/37353257?v=4)
- [https://api.github.com/users/Sebasteuo/events%7B/privacy%7D](https://api.github.com/users/Sebasteuo/events%7B/privacy%7D)

## Related threats

- [eml_parser denial of service via nested parentheses in Received headers](https://junglewise.ai/threats/cve-2026-55620-eml-parser-denial-of-service-via-nested-parentheses-in-received)
- [eml_parser denial of service via deeply nested email header comments](https://junglewise.ai/threats/cve-2026-55619-eml-parser-denial-of-service-via-deeply-nested-email-header)
- [GOVCERT-LU eml_parser URL extraction bypass via HTML entities](https://junglewise.ai/threats/cve-2026-55618-govcert-lu-eml-parser-url-extraction-bypass-via-html-entities)
- [eml_parser path traversal in example script](https://junglewise.ai/threats/cve-2026-29780-eml-parser-path-traversal-in-example-script)