# Understanding and mitigating the Jinja2 XSS vulnerability (CVE-2024-22195)

DevFeed: [Understanding and mitigating the Jinja2 XSS vulnerability (CVE-2024-22195)](<https://devfeed.tech/articles/understanding-and-mitigating-the-jinja2-xss-vulnerability-cve-2024-22195-7992.md>)

Original publisher: [Read original article](<https://snyk.io/blog/jinja2-xss-vulnerability/>)

Author: Liran Tal

Published: 2024-01-18T06:00:00Z

Content type: article

Language: en

Sources: [Blog RSS Feed | Snyk](<https://devfeed.tech/sources/blog-rss-feed-snyk.md>)

Topics: [vulnerability](<https://devfeed.tech/topics/vulnerability.md>), [Security](<https://devfeed.tech/topics/security.md>), [Python](<https://devfeed.tech/topics/python.md>), [Library](<https://devfeed.tech/topics/library.md>), [Scripting](<https://devfeed.tech/topics/scripting.md>)

Tags: [awareness](<https://devfeed.tech/tags/awareness.md>), [blog](<https://devfeed.tech/tags/blog.md>), [cve](<https://devfeed.tech/tags/cve.md>), [dependencies](<https://devfeed.tech/tags/dependencies.md>), [developer](<https://devfeed.tech/tags/developer.md>), [devrel](<https://devfeed.tech/tags/devrel.md>), [open-source-security](<https://devfeed.tech/tags/open-source-security.md>), [python](<https://devfeed.tech/tags/python.md>), [python-dependencies](<https://devfeed.tech/tags/python-dependencies.md>), [security](<https://devfeed.tech/tags/security.md>), [snyk](<https://devfeed.tech/tags/snyk.md>), [snyk-open-source](<https://devfeed.tech/tags/snyk-open-source.md>), [vulnerability](<https://devfeed.tech/tags/vulnerability.md>), [xss](<https://devfeed.tech/tags/xss.md>)

## AI overview

This article explains the Jinja2 cross-site scripting vulnerability CVE-2024-22195, which affects versions before 3.1.3. It describes the vulnerable filter behavior, the potential for injecting arbitrary HTML attributes and executing untrusted scripts in a browser, and ways to check project dependencies and scan them with Snyk.

## Source excerpt

On January 11th, 2024, a significant security vulnerability was disclosed in Jinja2, a widely used Python templating library. Identified as CVE-2024-22195, this cross-site scripting (XSS) vulnerability has raised concerns due to its impact on numerous projects.