| Name | CVE-2025-15282 |
| Description | User-controlled data URLs parsed by urllib.request.DataHandler allow injecting headers through newlines in the data URL mediatype. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4455-1 |
| Debian Bugs | 1126779, 1126780, 1126781 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| pypy3 (PTS) | bullseye | 7.3.5+dfsg-2+deb11u2 | vulnerable |
| bullseye (security) | 7.3.5+dfsg-2+deb11u5 | vulnerable | |
| bookworm | 7.3.11+dfsg-2+deb12u3 | vulnerable | |
| trixie | 7.3.19+dfsg-2 | vulnerable | |
| forky, sid | 7.3.20+dfsg-4 | vulnerable | |
| python2.7 (PTS) | bullseye | 2.7.18-8+deb11u1 | fixed |
| python3.11 (PTS) | bookworm | 3.11.2-6+deb12u6 | vulnerable |
| bookworm (security) | 3.11.2-6+deb12u3 | vulnerable | |
| python3.13 (PTS) | trixie | 3.13.5-2 | vulnerable |
| forky, sid | 3.13.12-1 | fixed | |
| python3.14 (PTS) | forky, sid | 3.14.3-1 | fixed |
| python3.9 (PTS) | bullseye | 3.9.2-1 | vulnerable |
| bullseye (security) | 3.9.2-1+deb11u5 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| pypy3 | source | (unstable) | (unfixed) | 1126781 | ||
| python2.7 | source | (unstable) | (not affected) | |||
| python3.11 | source | (unstable) | (unfixed) | |||
| python3.13 | source | (unstable) | 3.13.12-1 | 1126780 | ||
| python3.14 | source | (unstable) | 3.14.3-1 | 1126779 | ||
| python3.9 | source | bullseye | 3.9.2-1+deb11u5 | DLA-4455-1 | ||
| python3.9 | source | (unstable) | (unfixed) |
[trixie] - pypy3 <no-dsa> (Minor issue)
[bookworm] - pypy3 <no-dsa> (Minor issue)
[bullseye] - pypy3 <postponed> (Minor issue)
- python2.7 <not-affected> (python3 urllib rewritten from old urllib&urllib2; 'data:' URLs are percent-encoded in urllib.URLOpener.open(); 'data:' URLs unsupported in urllib2)
https://github.com/python/cpython/issues/143925
https://github.com/python/cpython/pull/143926
https://mail.python.org/archives/list/security-announce@python.org/thread/X66HL7SISGJT33J53OHXMZT4DFLMHVKF/
https://github.com/python/cpython/commit/f25509e78e8be6ea73c811ac2b8c928c28841b9f (main)
https://github.com/python/cpython/commit/05356b1cc153108aaf27f3b72ce438af4aa218c0 (3.14 branch)
https://github.com/python/cpython/commit/a35ca3be5842505dab74dc0b90b89cde0405017a (3.13 branch)
https://github.com/python/cpython/commit/3f396ca9d7bbe2a50ea6b8c9b27c0082884d9f80 (3.11 branch)
https://github.com/python/cpython/commit/34d76b00dabde81a793bd06dd8ecb057838c4b38 (3.10-branch)