Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1oNWM4LXJxd3AtY3A5Nc4AA4Ys

Jinja vulnerable to HTML attribute injection when passing user input as keys to xmlattr filter

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.

Permalink: https://github.com/advisories/GHSA-h5c8-rqwp-cp95
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1oNWM4LXJxd3AtY3A5Nc4AA4Ys
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 4 months ago
Updated: 4 months ago

CVSS Score: 5.4
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Identifiers: GHSA-h5c8-rqwp-cp95, CVE-2024-22195
References:

• https://github.com/pallets/jinja/security/advisories/GHSA-h5c8-rqwp-cp95
• https://nvd.nist.gov/vuln/detail/CVE-2024-22195
• https://github.com/pallets/jinja/commit/716795349a41d4983a9a4771f7d883c96ea17be7
• https://github.com/pallets/jinja/releases/tag/3.1.3
• https://lists.fedoraproject.org/archives/list/[email protected]/message/5XCWZD464AJJJUBOO7CMPXQ4ROBC6JX2/
• https://lists.debian.org/debian-lts-announce/2024/01/msg00010.html
• https://lists.fedoraproject.org/archives/list/[email protected]/message/DELCVUUYX75I5K4Q5WMJG4MUZJA6VAIP/
• https://lists.fedoraproject.org/archives/list/[email protected]/message/O7YWRBX6JQCWC2XXCTZ55C7DPMGICCN3/
• https://github.com/advisories/GHSA-h5c8-rqwp-cp95

Repository: https://github.com/pallets/jinja
Blast Radius: 27.7

Affected Packages