Regular Expression Denial of Service (ReDoS)
This affects the package jinja2 from 0.0.0 and before 2.11.3. The ReDOS vulnerability of the regex is mainly due to the sub-pattern [a-zA-Z0-9.-]+.[a-zA-Z0-9.-]+ This issue can be mitigated by Markdown to format user content instead of the urlize filter, or by implementing request timeouts and limiting process memory.
This contains a fix for a speed issue with the urlize filter. urlize is likely to be called on untrusted user input. For certain inputs some of the regular expressions used to parse the text could take a very long time due to backtracking. As part of the fix, the email matching became slightly stricter. The various speedups apply to urlize in general, not just the specific input cases.
Improve the speed of the urlize filter by reducing regex backtracking. Email matching requires a word character at the start of the domain part, and only word characters in the TLD. 1343
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Bumps jinja2 from 2.11.2 to 2.11.3. This update includes a security fix.
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Commits
cf21539release version 2.11.315ef8f0Merge pull request #1343 from pallets/urlize-speedupef658dcspeed up urlize matchingeeca0feMerge pull request #1207 from mhansen/patch-12dd7691Merge pull request #1209 from mhansen/patch-34892940do_dictsort: update example ready to copy/paste7db7d33api.rst: bugfix in docs, import PackageLoader9ec465bfix changelog headerDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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