CVE-2023-32309

HIGH

PyMdown Extensions 1.5.0-9.9.9 - Arbitrary File Read via Snippets Include Syntax

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2023-32309. PoCs published by itlabbet.

AI-analyzed exploit summary The repository contains only a README.md file with the CVE identifier and no additional details or exploit code. No functional proof-of-concept or technical details are provided.

Description

PyMdown Extensions is a set of extensions for the `Python-Markdown` markdown project. In affected versions an arbitrary file read is possible when using include file syntax. By using the syntax `--8<--"/etc/passwd"` or `--8<--"/proc/self/environ"` the content of these files will be rendered in the generated documentation. Additionally, a path relative to a specified, allowed base path can also be used to render the content of a file outside the specified base paths: `--8<-- "../../../../etc/passwd"`. Within the Snippets extension, there exists a `base_path` option but the implementation is vulnerable to Directory Traversal. The vulnerable section exists in `get_snippet_path(self, path)` lines 155 to 174 in snippets.py. Any readable file on the host where the plugin is executing may have its content exposed. This can impact any use of Snippets that exposes the use of Snippets to external users. It is never recommended to use Snippets to process user-facing, dynamic content. It is designed to process known content on the backend under the control of the host, but if someone were to accidentally enable it for user-facing content, undesired information could be exposed. This issue has been addressed in version 10.0. Users are advised to upgrade. Users unable to upgrade may restrict relative paths by filtering input.

Exploits (1)

nomisec STUB
by itlabbet · poc
https://github.com/itlabbet/CVE-2023-32309

The repository contains only a README.md file with the CVE identifier and no additional details or exploit code. No functional proof-of-concept or technical details are provided.

Classification
Stub 10%
Attack Type
Other
Complexity
Trivial
Reliability
Theoretical
Target: unknown
No auth needed
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Scores

CVSS v3 7.5
EPSS 0.0118
EPSS Percentile 79.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-22
Status published
Products (2)
facelessuser/pymdown_extensions 1.5.0 - 10.0
pypi/pymdown-extensions 1.5 - 10.0PyPI
Published May 15, 2023
Tracked Since Feb 18, 2026