python3-tornado: In Tornado before 6.5.5, cookie attribute injection could occur because the domain, path, and samesite arguments to ....
CVE-2026-35536 is fixed in 9 products on 1 platform, first by python3-tornado 6.5.4-0.1ubuntu0.1, released April 2, 2026. It is not reported as exploited. Patch Radar priority: Routine.
In Tornado before 6.5.5, cookie attribute injection could occur because the domain, path, and samesite arguments to .RequestHandler.set_cookie were not checked for crafted characters.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| python-tornado · Debian 14 | 6.5.5-1 | DEBIAN-CVE-2026-35536 | Apr 3, 2026 |
| python-tornado · Fedora 43 | 6.5.7-1.fc43 | FEDORA-2026-23656E6D2F | Jul 3, 2026 |
| python-tornado · RHEL 10 | 6.4.2-1.el10_0.2 | RHSA-2026:20577 | Apr 3, 2026 |
| python-tornado · Ubuntu 18.04.6 LTS (bionic) | 4.5.3-1ubuntu0.2+esm3 | python-tornado 4.5.3-1ubuntu0.2+esm3 | Apr 30, 2026 |
| python-tornado · rocky 10 | 0:6.5.5-1.el10_1.1 | RLSA-2026:19034 | May 29, 2026 |
| python-tornado · rocky 9 | 0:6.5.5-1.el9_7.1 | RLSA-2026:19189 | May 21, 2026 |
| python-tornado-debugsource · Fedora 43 | 6.5.7-1.fc43 | FEDORA-2026-23656E6D2F | Jul 3, 2026 |
| python-tornado-debugsource · amzn 2023 | 6.1.0-2.amzn2023.0.8 | ALAS2023-2026-1587 | Apr 13, 2026 |
| python-tornado-doc · Fedora 43 | 6.5.7-1.fc43 | FEDORA-2026-23656E6D2F | Jul 3, 2026 |
| python-tornado-doc · amzn 2023 | 6.1.0-2.amzn2023.0.8 | ALAS2023-2026-1587 | Apr 13, 2026 |
| python3-tornado · Fedora 43 | 6.5.7-1.fc43 | FEDORA-2026-23656E6D2F | Jul 3, 2026 |
| python3-tornado · RHEL 9 | 0:6.5.5-1.el9_8 | RHSA-2026:19189 | May 15, 2026 |
| python3-tornado · Ubuntu 18.04.6 LTS (bionic) | 4.5.3-1ubuntu0.2+esm3 | python3-tornado 4.5.3-1ubuntu0.2+esm3 | Apr 30, 2026 |
| python3-tornado · Ubuntu 22.04.1 LTS (jammy) | 6.1.0-3ubuntu0.1~esm5 | python3-tornado 6.1.0-3ubuntu0.1~esm5 | Apr 30, 2026 |
| python3-tornado · Ubuntu 24.04.5 LTS (noble) | 6.4.0-1ubuntu0.5 | python3-tornado 6.4.0-1ubuntu0.5 | Apr 30, 2026 |
| python3-tornado · Ubuntu 25.10 (questing) | 6.4.2-3ubuntu0.3 | python3-tornado 6.4.2-3ubuntu0.3 | Apr 30, 2026 |
| python3-tornado · Ubuntu 26.04.1 LTS (resolute) | 6.5.4-0.1ubuntu0.1 | python3-tornado 6.5.4-0.1ubuntu0.1 | Apr 2, 2026 |
| python3-tornado · almalinux 10 | 6.5.5-1.el10_2 | ALSA-2026:19034 | May 19, 2026 |
| python3-tornado · almalinux 9 | 6.5.5-1.el9_8 | ALSA-2026:19189 | May 19, 2026 |
| python3-tornado · amzn 2023 | 6.1.0-2.amzn2023.0.8 | ALAS2023-2026-1587 | Apr 13, 2026 |
| python3-tornado · ol 10 | 0:6.5.5-1.el10_1.1 | ELSA-2026-13641 | May 5, 2026 |
| python3-tornado · ol 9 | 0:6.5.5-1.el9_7.1 | ELSA-2026-13670 | May 5, 2026 |
| python3-tornado-debuginfo · Fedora 43 | 6.5.7-1.fc43 | FEDORA-2026-23656E6D2F | Jul 3, 2026 |
| python3-tornado-debuginfo · amzn 2023 | 6.1.0-2.amzn2023.0.8 | ALAS2023-2026-1587 | Apr 13, 2026 |
| python3.13-tornado · amzn 2023 | 6.4.2-1.amzn2023.0.3 | ALAS2023-2026-1588 | Apr 27, 2026 |
| python3.13-tornado-debuginfo · amzn 2023 | 6.4.2-1.amzn2023.0.3 | ALAS2023-2026-1588 | Apr 27, 2026 |
| python3.13-tornado-debugsource · amzn 2023 | 6.4.2-1.amzn2023.0.3 | ALAS2023-2026-1588 | Apr 27, 2026 |
| python3.13-tornado-doc · amzn 2023 | 6.4.2-1.amzn2023.0.3 | ALAS2023-2026-1588 | Apr 27, 2026 |
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