🛡️ CVE-2023-26302 on Debian — markdown-it-py

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.

Distribution advisory

This page covers CVE-2023-26302 as tracked by Debian, for the package markdown-it-py. The fix is available in version 2.1.0-5; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

DEBIAN-CVE-2023-26302 is classified as CWE-173: Improper Handling of Alternate Encoding. The product does not properly handle when an input uses an alternate encoding that is valid for the control sphere to which the input is being sent.

Affected software

DEBIAN-CVE-2023-26302 is recorded against 1 package.

  • markdown-it-py (fixed in 2.1.0-5)

Timeline and source

Published on 22 February 2023 and last revised on 7 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security-tracker.debian.org (Advisory)

CVE-2023-26302 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2023-02-22
Updated 2026-08-11
Modified 2026-08-07
Fix URL N/A

Affected Packages

Software From version Fixed in
markdown-it-py — 2.1.0-5

Site Security Check

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DEBIAN-CVE-2023-26302 is rated CVSS 8.0 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

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