Detections
Analytics

Echo: markdown: security update to 3.8.1

medium Tenable Cloud Security Plugin ID 463488

Description

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

 - Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause
 html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-
 Markdown does not catch this exception, any application that processes attacker-controlled Markdown may
 crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems,
 CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor
 and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing
 untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions. (CVE-2025-69534)

Solution

Update the markdown library and its related packages to version 3.8.1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-69534

Plugin Details

Severity: Medium

ID: 463488

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.62

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2025-69534

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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:P/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 5.5

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/1/2026

Vulnerability Publication Date: 3/5/2026

Reference Information

CVE: CVE-2025-69534