{"cve":"CVE-2026-55619","nvd":{"published":"2026-08-25T19:16:50.477","modified":"2026-09-09T21:07:31.353","status":"Deferred","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 3.0.2, eml_parser.parser.HeaderParser.header_fetch_parse in eml_parser/parser.py uses email.utils.getaddresses() to parse address-bearing e-mail headers. A deeply nested CFWS comment construct exhausts the standard-library recursive descent parser's call stack and raises RecursionError, which is not caught and therefore aborts parsing of the entire message. An attacker can disrupt SOC pipelines that process untrusted EML files, although callers already need to handle exceptions from malformed or pathological messages. This issue is fixed in version 3.0.2.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":["CWE-770","CWE-1124"],"references":["https://github.com/GOVCERT-LU/eml_parser/commit/746a69f86443eb0b6a47f77db3cfe727c21f92b3","https://github.com/GOVCERT-LU/eml_parser/pull/90","https://github.com/GOVCERT-LU/eml_parser/releases/tag/v3.0.2","https://github.com/GOVCERT-LU/eml_parser/security/advisories/GHSA-m66c-fw79-6359"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:17.453294893+00:00"},"epss":{"cve":"CVE-2026-55619","score":0.00524,"percentile":0.44438,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-m66c-fw79-6359","url":"https://osv.dev/vulnerability/GHSA-m66c-fw79-6359","summary":"eml_parser has parser DoS via deeply nested parentheses in e-mail headers","modified":"2026-09-10T12:25:57.609576367Z","packages":[{"ecosystem":"PyPI","name":"eml-parser","purl":"pkg:pypi/eml-parser","ranges":["<3.0.2"],"fixed":["3.0.2"]}]},{"id":"PYSEC-2026-3833","url":"https://osv.dev/vulnerability/PYSEC-2026-3833","summary":"eml_parser has parser DoS via deeply nested parentheses in e-mail headers","modified":"2026-09-10T12:15:06.893976732Z","packages":[{"ecosystem":"PyPI","name":"eml-parser","purl":"pkg:pypi/eml-parser","ranges":["<3.0.2"],"fixed":["3.0.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}