CVE-2024-22195 is a medium-severity (CVSS 5.4) Cross-site Scripting (XSS) vulnerability in jinja2. A fix is available for jinja2 — see the affected versions and patch details below.
Jinja vulnerable to Cross-Site Scripting (XSS)
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2024-22195.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
jinja2Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
The xmlattr filter in affected versions of Jinja accepts keys containing spaces. XML/HTML attributes cannot contain spaces, as each would then be interpreted as a separate attribute. If an application accepts keys (as opposed to only values) as user input, and renders these in pages that other users see as well, an attacker could use this to inject other attributes and perform XSS. Note that accepting keys as user input is not common or a particularly intended use case of the xmlattr filter, and an application doing so should already be verifying what keys are provided regardless of this fix.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | jinja2 | all versions | 3.1.3pip install --upgrade 'jinja2==3.1.3' |
Affected Products
jinjapalletsprojectsDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for jinja2, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update jinja2 to 3.1.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-22195 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
The identified issue is classified as moderate due to a cross-site scripting (XSS) vulnerability in Jinja2. This flaw arises from the xmlattr filter, which permits keys with spaces, contrary to XML/HTML attribute standards. In scenarios where an application accepts user-input keys and renders them for other users,…
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.Source: Red Hat security advisory for CVE-2024-22195 (CC BY 4.0)
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat Ansible Automation Platform 2.4 for RHEL 8 | python3x-jinja2-0:3.1.3-1.el8ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform 2.4 for RHEL 8 | automation-controller-0:4.5.5-2.el8ap | RHSA-2024:1640 |
| Red Hat Ceph Storage 7.1 | rhceph/ceph-nvmeof-cli-rhel9:1.2.13-4 | RHSA-2024:3927 |
| Red Hat Enterprise Linux 8 | fence-agents-0:4.2.1-121.el8_9.4 | RHBA-2024:0891 |
| Red Hat Enterprise Linux 8 | fence-agents-0:4.2.1-129.el8 | RHSA-2024:2968 |
| Red Hat Enterprise Linux 8 | python27:2.7-8100020240208011952.5f0f67de | RHSA-2024:2987 |
| Red Hat Enterprise Linux 8 | python-jinja2-0:2.10.1-4.el8 | RHSA-2024:3102 |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | fence-agents-0:4.2.1-65.el8_4.14 | RHBA-2024:1398 |
Frequently Asked Questions
Is CVE-2024-22195 in your dependencies?
Find it across PyPI, including transitive dependencies.