Upstream information

CVE-2026-88753 at MITRE

Description

A Regular-Expression Denial of Service (ReDoS) in the Markdown2. extract_metadata() function (lib/markdown2.py) of trentm markdown2 through v2.5.5 allows attackers to cause a Denial of Service (DoS) via a crafted Markdown document.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail CNA (CISA-ADP)
Base Score 7.5
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
CVSSv3 Version 3.1
SUSE Bugzilla entry: 1285724 [NEW]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
openSUSE Tumbleweed
  • python313-markdown2 >= 2.5.5-2.1
  • python314-markdown2 >= 2.5.5-2.1
 Patchnames:
openSUSE-Tumbleweed-2026-12159

SUSE Timeline for this CVE

CVE page created: Fri Oct 16 11:58:50 2026
CVE page last modified: Tue Oct 20 11:55:08 2026