gh-149018: Use `XML_SetHashSalt16Bytes` in `pyexpat`/`_elementtree` when possible by StanFromIreland · Pull Request #149023 · python/cpython

• Issue: [CVE-2026-7210] Insufficient entropy in pyexpat with protection against hash flooding #149018

@picnixz anything I should be checking specifically for, so far it's all unrelated/existing failures, but I'm also not certain as to what I should be looking for exactly?

Thanks @StanFromIreland for the PR 🌮🎉.. I'm working now to backport this PR to: 3.10, 3.11, 3.12, 3.13, 3.14, 3.15.
🐍🍒⛏🤖

Sorry, @StanFromIreland, I could not cleanly backport this to 3.14 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 24b8f12544468e4cedf5bfbe25442fcd495391e4 3.14

Sorry, @StanFromIreland, I could not cleanly backport this to 3.13 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 24b8f12544468e4cedf5bfbe25442fcd495391e4 3.13

Sorry, @StanFromIreland, I could not cleanly backport this to 3.12 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 24b8f12544468e4cedf5bfbe25442fcd495391e4 3.12

Sorry, @StanFromIreland, I could not cleanly backport this to 3.11 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 24b8f12544468e4cedf5bfbe25442fcd495391e4 3.11

Sorry, @StanFromIreland, I could not cleanly backport this to 3.10 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 24b8f12544468e4cedf5bfbe25442fcd495391e4 3.10

Is there no fix/backport for python 3.13?