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CVE-2023-26302

20
FAUCET Score

CVE-2023-26302 describes a denial-of-service vulnerability in markdown-it-py, affecting versions prior to 2.2.0. An authenticated, local attacker could trigger this by providing invalid UTF-8 characters to the command-line interface. Rated Medium (CVSS 5.5), the vulnerability has low attack complexity and requires local user privileges, with the primary impact being a denial of service. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.2.0CPE matchmatch criteria
cpe:2.3:a:executablebooks:markdown-it-py:*:*:*:*:*:*:*:*
>= 0, < v2.2.0CPE match
cpe:2.3:a:executablebooks:markdown-it-py:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.3LOW

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
1.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.22%
Probability of exploitation in next 30 days
EPSS Percentile
13.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0022 is in the 59th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: markdown-it-pyFixed in: 2.2.0

Vendor Advisories (2)

redhatCVE-2023-26302Moderate

markdown-it-py: Denial of service in the command line interface due to invalid UTF-8 characters as input.

Feb 23, 2023
pipGHSA-jrwr-5x3p-hvc3high

markdown-it-py Denial of Service vulnerability in the command line interface

Feb 23, 2023

References

github.com / executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c
Patch