CVE-2026-55619
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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 5.3
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- EPSS probability
- 0.30%
- CWE
- CWE-770, CWE-1124
- Published
- 2026-08-25
- Last modified
- 2026-08-25
Affected products
- GOVCERT-LU eml_parser
Weakness type
Related vulnerabilities
- CVE-2026-87011 — Open WebUI: Unauthenticated requests can stall the server via uncached OIDC fetches in back-channel logout
- CVE-2023-54394 — PocketMine-MP before 4.18.0-ALPHA2 Bandwidth Amplification via InventoryTransactionPacket
- CVE-2026-53937 — MCP Kotlin SDK's unbounded line buffer in StdioServerTransport/StdioClientTransport leads to memory exhaustion (DoS)
- CVE-2026-86075 — n8n: Unauthenticated Persistent Storage Exhaustion via OAuth Dynamic Client Registration Endpoint
- CVE-2026-57099 — ASP.NET Core Denial of Service Vulnerability
- CVE-2026-69374 — Windows SMB Server Denial of Service Vulnerability
- CVE-2026-72978 — Active Directory Federation Services (AD FS) Denial of Service Vulnerability
- CVE-2026-82075 — Uncontrolled Resource Consumption in MongoDB Sharded Cluster Router Allows Unauthenticated Denial of Service