| Name | CVE-2026-0672 |
| Description | When using http.cookies.Morsel, user-controlled cookie values and parameters can allow injecting HTTP headers into messages. Patch rejects all control characters within cookie names, values, and parameters. |
| 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 | 1126761, 1126762, 1126763 |
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 | |
| 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) | 1126763 | ||
| python3.11 | source | (unstable) | (unfixed) | |||
| python3.13 | source | (unstable) | 3.13.12-1 | 1126762 | ||
| python3.14 | source | (unstable) | 3.14.3-1 | 1126761 | ||
| python3.9 | source | bullseye | 3.9.2-1+deb11u5 | DLA-4455-1 | ||
| python3.9 | source | (unstable) | (unfixed) |
[trixie] - python3.13 <no-dsa> (Minor issue)
[bookworm] - python3.11 <no-dsa> (Minor issue)
[trixie] - pypy3 <no-dsa> (Minor issue)
[bookworm] - pypy3 <no-dsa> (Minor issue)
[bullseye] - pypy3 <postponed> (Minor issue)
https://github.com/python/cpython/pull/143920
https://github.com/python/cpython/issues/143919
https://mail.python.org/archives/list/security-announce@python.org/thread/6VFLQQEIX673KXKFUZXCUNE5AZOGZ45M/
https://github.com/python/cpython/commit/95746b3a13a985787ef53b977129041971ed7f70
https://github.com/python/cpython/commit/712452e6f1d4b9f7f8c4c92ebfcaac1705faa440 (3.14 branch)
https://github.com/python/cpython/commit/918387e4912d12ffc166c8f2a38df92b6ec756ca (3.13 branch)
https://github.com/python/cpython/commit/b1869ff648bbee0717221d09e6deff46617f3e85 (3.11 branch)
https://github.com/python/cpython/commit/7852d72b653fea0199acf5fc2a84f6f8b84eba8d (3.10 branch)