Vulnerability in Python Software Foundation Cpython
CVE-2025-15282
User-controlled data URLs parsed by urllib.request.DataHandler allow injecting headers through newlines in the data URL mediatype.
Vulnerability class: CRLF Injection
Published · last modified .
EPSS exploit prediction
EPSS: 0.005 (43.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Python Software Foundation Cpython — versions 0, 3.11.0, 3.12.0
Weakness classification (CWE)
References
- github.com/python/cpython/pull/143926 (patch)
- github.com/python/cpython/issues/143925 (issue-tracking)
- mail.python.org/archives/list/security-announce@python.org/thread/X66HL7SISGJT3… (vendor-advisory)
- github.com/python/cpython/commit/f25509e78e8be6ea73c811ac2b8c928c28841b9f (patch)
- github.com/python/cpython/commit/05356b1cc153108aaf27f3b72ce438af4aa218c0 (patch)
- github.com/python/cpython/commit/34d76b00dabde81a793bd06dd8ecb057838c4b38 (patch)
- github.com/python/cpython/commit/3f396ca9d7bbe2a50ea6b8c9b27c0082884d9f80 (patch)
- github.com/python/cpython/commit/4ed11d3cd288e6b90196a15c5a825a45d318fe47 (patch)
- github.com/python/cpython/commit/a35ca3be5842505dab74dc0b90b89cde0405017a (patch)