CVE-2024-22195: jinja XSS (CVSS 5.4)

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.

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CVSS v3.1 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
palletsprojects	jinja	< 3.1.3

References

Other References

https://github.com/pallets/jinja/releases/tag/3.1.3 https://github.com/pallets/jinja/security/advisories/GHSA-h5c8-rqwp-cp95 https://lists.debian.org/debian-lts-announce/2024/01/msg00010.html https://lists.fedoraproject.org/archives/list/[email protected]/message/5XCWZD464AJJJUBOO7CMPXQ4ROBC6JX2/ https://lists.fedoraproject.org/archives/list/[email protected]/message/DELCVUUYX75I5K4Q5WMJG4MUZJA6VAIP/ https://lists.fedoraproject.org/archives/list/[email protected]/message/O7YWRBX6JQCWC2XXCTZ55C7DPMGICCN3/ https://github.com/pallets/jinja/releases/tag/3.1.3 https://github.com/pallets/jinja/security/advisories/GHSA-h5c8-rqwp-cp95 https://lists.debian.org/debian-lts-announce/2024/01/msg00010.html https://lists.debian.org/debian-lts-announce/2024/12/msg00009.html

Frequently Asked Questions

What is CVE-2024-22195? +

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. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2024-22195? +

CVE-2024-22195 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-22195? +

CVE-2024-22195 affects products from palletsprojects, specifically: jinja. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-22195? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-22195