# CVE-2022-40896: PYSEC-2023-117 - A ReDoS issue was discovered in pygments/lexers/smithy.py in pygments through 2.15.0 via SmithyLexer.

Source: https://junglewise.ai/threats/cve-2022-40896-pygments-vulnerable-to-redos  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-07-19  
License: CC BY 4.0 with a link back

CVE-2022-40896 · Severity: low · CVSS 3.1 · Published 2023-07-19

A ReDoS issue was discovered in pygments/lexers/smithy.py in pygments through 2.15.0 via SmithyLexer.

Technologies: [pygments (PyPI)](https://junglewise.ai/threats/technologies/pygments). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2022-40896 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2022-40896 being exploited in the wild.

**How severe is CVE-2022-40896?** Low severity, with a CVSS score of 3.1, published 19 July 2023.

**Which products and versions are affected?** pygments (PyPI) ECOSYSTEM:introduced=0,fixed=2.15.0, ECOSYSTEM:introduced=0,fixed=2.15.1.

**Is there a fix for CVE-2022-40896?** Yes. pygments (PyPI): upgrade to 2.15.0, 2.15.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2022-40896?** Check whether you run pygments (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- pygments (PyPI): upgrade to 2.15.0, 2.15.1 or later

  ```sh
  pip install "pygments>=2.15.1"
  ```


## Affected products

- pygments (PyPI) ECOSYSTEM:introduced=0,fixed=2.15.0, ECOSYSTEM:introduced=0,fixed=2.15.1

## Identifiers

- CVE-2022-40896
- GHSA-mrwq-x4v8-fh7p
- PYSEC-2023-117

## Related threats

- [PYSEC-2026-2987 - Pygments has Regular Expression Denial of Service (ReDoS) due to Inefficient Regex for GUID Matching](https://junglewise.ai/threats/cve-2026-4539-pygments-has-regular-expression-denial-of-service-redos-due-to)
- [Infinite Loop in Pygments](https://junglewise.ai/threats/cve-2021-20270-infinite-loop-in-pygments)
- [Pygments vulnerable to Regular Expression Denial of Service (ReDoS)](https://junglewise.ai/threats/cve-2021-27291-pygments-vulnerable-to-regular-expression-denial-of-service-redos)
- [Command Injection in Pygments](https://junglewise.ai/threats/cve-2015-8557-command-injection-in-pygments)