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CVE-2026-55618: CWE-116: Improper Encoding or Escaping of Output in GOVCERT-LU eml_parser

0
Medium
VulnerabilityCVE-2026-55618cvecve-2026-55618cwe-116
Published: 08/25/2026 (08/25/2026, 18:21:56 UTC)
Source: CVE Database V5
Vendor/Project: GOVCERT-LU
Product: eml_parser

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, the clean_found_uri function in eml_parser/parser.py validates potential URL strings before unescaping HTML entities used for colon, slash, or period characters. Valid encoded URLs and their host names are therefore rejected and omitted from the extracted URL and domain lists. Email security gateways and SOC pipelines that use those lists as indicators of compromise may fail to submit the hidden URLs to threat intelligence feeds, reputation services, or sandboxes, allowing malicious links to bypass inspection. This issue is fixed in version 3.0.2.

CVSS v3.1

Score 6.5medium

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Technical Details

Data Version
5.2
Assigner Short Name
GitHub_M
Date Reserved
2026-06-16T23:31:22.446Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
null

Threat ID: 6a8de143acd9273b4991a18b

Added to database: 08/25/2026, 18:38:59 UTC

Last updated: 08/25/2026, 21:35:59 UTC

Views: 5

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