Detections
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SCA: security update for eml_parser (GHSA-g7gc-gmgp-wgqg)

high Tenable Self-Hosted Container Security Plugin ID 446277

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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.routing.noparenthesis in
 eml_parser/routing.py removes parenthesized CFWS comments from Received: headers with a regex-based fix-
 point loop whose running time is quadratic in the nesting depth. A single Received: header with 5,000
 nested parentheses causes approximately 1.3 seconds of CPU saturation per parsed message, and doubling the
 nesting depth approximately quadruples the running time. An attacker can submit relatively small EML files
 that consume multiple seconds of processing time, causing worker latency, queue backpressure, and possible
 service-level outages in synchronous gateways, sandboxes, and real-time triage pipelines. This issue is
 fixed in version 3.0.2. (CVE-2026-55620)

Solution

Update the eml_parser library and its related packages to version 3.0.2 or later.

See Also

https://github.com/advisories/GHSA-g7gc-gmgp-wgqg

Plugin Details

Severity: High

ID: 446277

Version: Revision 1.2

Type: Local

Family: SCA Checks

Published: 8/25/2026

Updated: 8/26/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.63

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-55620

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 8/25/2026

Vulnerability Publication Date: 8/25/2026

Reference Information

CVE: CVE-2026-55620