CVE-2025-43859 in python-h11
Nobody has claimed this yet.
- Dominant language
- Python
- Stars
- 377
- Forks
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- Avg merge
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- Merged PRs (30d)
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Description
Python h11 has this known vulnerability in the current version (0.14). This is fixed in the latest version (0.16). I tried to update the project dependencies for a PR using poetry update, did however run in to some issues with the tests (suddenly missing the 'taxii21' module)
I am fully aware that this CVE is not exploitable, however CVE scanners is triggering, mandating responses from various security teams. Would be great if this could be updated?
Kind regards
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by checking the Poetry dependency declarations and reproduce the test run after updating h11 from 0.14 to 0.16. Investigate the reported missing taxii21 module, then confirm the full test suite passes and the dependency scan no longer reports CVE-2025-43859.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- build-system, security
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100