CVE-2024-34064 Affecting jinja2 package, versions *
Snyk CVSS
Threat Intelligence
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Test your applications- Snyk ID SNYK-DEBIANUNSTABLE-JINJA2-6811569
- published 8 May 2024
- disclosed 6 May 2024
How to fix?
There is no fixed version for Debian:unstable
jinja2
.
NVD Description
Note: Versions mentioned in the description apply only to the upstream jinja2
package and not the jinja2
package as distributed by Debian
.
See How to fix?
for Debian:unstable
relevant fixed versions and status.
Jinja is an extensible templating engine. The xmlattr
filter in affected versions of Jinja accepts keys containing non-attribute characters. XML/HTML attributes cannot contain spaces, /
, >
, or =
, as each would then be interpreted as starting 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. The fix for CVE-2024-22195 only addressed spaces but not other characters. Accepting keys as user input is now explicitly considered an unintended use case of the xmlattr
filter, and code that does so without otherwise validating the input should be flagged as insecure, regardless of Jinja version. Accepting values as user input continues to be safe. This vulnerability is fixed in 3.1.4.