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Update dependency jinja2 to v3.1.6 [SECURITY] - #164758
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This PR contains the following updates:
==3.1.4→==3.1.6Jinja has a sandbox breakout through indirect reference to format method
CVE-2024-56326 / GHSA-q2x7-8rv6-6q7h
More information
Details
An oversight in how the Jinja sandboxed environment detects calls to
str.formatallows an attacker that controls the content of a template to execute arbitrary Python code.To exploit the vulnerability, an attacker needs to control the content of a template. Whether that is the case depends on the type of application using Jinja. This vulnerability impacts users of applications which execute untrusted templates.
Jinja's sandbox does catch calls to
str.formatand ensures they don't escape the sandbox. However, it's possible to store a reference to a malicious string'sformatmethod, then pass that to a filter that calls it. No such filters are built-in to Jinja, but could be present through custom filters in an application. After the fix, such indirect calls are also handled by the sandbox.Severity
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
Jinja has a sandbox breakout through malicious filenames
CVE-2024-56201 / GHSA-gmj6-6f8f-6699
More information
Details
A bug in the Jinja compiler allows an attacker that controls both the content and filename of a template to execute arbitrary Python code, regardless of if Jinja's sandbox is used.
To exploit the vulnerability, an attacker needs to control both the filename and the contents of a template. Whether that is the case depends on the type of application using Jinja. This vulnerability impacts users of applications which execute untrusted templates where the template author can also choose the template filename.
Severity
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
Jinja2 vulnerable to sandbox breakout through attr filter selecting format method
CVE-2025-27516 / GHSA-cpwx-vrp4-4pq7
More information
Details
An oversight in how the Jinja sandboxed environment interacts with the
|attrfilter allows an attacker that controls the content of a template to execute arbitrary Python code.To exploit the vulnerability, an attacker needs to control the content of a template. Whether that is the case depends on the type of application using Jinja. This vulnerability impacts users of applications which execute untrusted templates.
Jinja's sandbox does catch calls to
str.formatand ensures they don't escape the sandbox. However, it's possible to use the|attrfilter to get a reference to a string's plain format method, bypassing the sandbox. After the fix, the|attrfilter no longer bypasses the environment's attribute lookup.Severity
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
Release Notes
pallets/jinja (jinja2)
v3.1.6Compare Source
Released 2025-03-05
|attrfilter does not bypass the environment's attribute lookup,allowing the sandbox to apply its checks. :ghsa:
cpwx-vrp4-4pq7v3.1.5Compare Source
Released 2024-12-21
str.format, such asby passing a stored reference to a filter that calls its argument.
:ghsa:
q2x7-8rv6-6q7hissues with names that contain f-string syntax.
:issue:
1792, :ghsa:gmj6-6f8f-6699clearandpopon known mutable sequencetypes. :issue:
2032renderfor an async template usesasyncio.run.:pr:
1952auto_aiterwarnings. :pr:1960aclose-ableAsyncGeneratorfromTemplate.generate_async. :pr:1960root_render_func()unclosed inTemplate.generate_async. :pr:1960:pr:
1960concatfunction for the current environmentwhen calling block references. :issue:
1701|uniqueasync-aware, allowing it to be used after anotherasync-aware filter. :issue:
1781|intfilter handlesOverflowErrorfrom scientific notation.:issue:
1921{% set ... %}call. :issue:
2021copy/pickle/etc) interaction withUndefinedobjects. :issue:
2025copy/picklesupport for the internalmissingobject.:issue:
2027Environment.overlay(enable_async)is applied correctly. :pr:2061FileSystemLoaderincludes the paths that weresearched. :issue:
1661PackageLoadershows a clearer error message when the package does notcontain the templates directory. :issue:
17051880urlizedoes not addmailto:to values like@a@b. :pr:1870@pass_context`` can be used with the ``|select`` filter. :issue:1624`setfor multiple assignment (a, b = 1, 2) does not fail when thetarget is a namespace attribute. :issue:
1413setin all branches of{% if %}{% elif %}{% else %}blocksdoes not cause the variable to be considered initially undefined.
:issue:
1253Configuration
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