# CVE-2026-49855: python3-tornado: Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, excepti... CVE-2026-49855 is fixed in 10 products on 1 platform, first by OPENSUSE-SU-2026:21067-1, released June 26, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-49855 - Priority: High - CVSS: 7.7 (Important) - EPSS: 0.0057 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jun 26, 2026 ## Description Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fix(es): * tornado: Tornado: Information disclosure via improper handling of credentials during HTTP redirects (CVE-2026-49853) * tornado: Tornado: Denial of Service via uncontrolled gzip decompression memory consumption (CVE-2026-49855) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | python-tornado RHEL 10 | 6.5.8-0.el10_0.1 | [RHSA-2026:80741](https://patchblox.com/security/data/fix/linux/rhsa-2026-80741.md) | Sep 14, 2026 | | Linux | python-tornado rocky 10 | 0:6.5.8-0.el10_2.1 | [RLSA-2026:67147](https://patchblox.com/security/data/fix/linux/rlsa-2026-67147.md) | Sep 15, 2026 | | Linux | python-tornado rocky 9 | 0:6.5.8-0.el9_8.1 | [RLSA-2026:67146](https://patchblox.com/security/data/fix/linux/rlsa-2026-67146.md) | Sep 15, 2026 | | Linux | python-tornado sles 15.6 | 4.5.3-150000.3.22.1 | [SUSE-SU-2026:2726-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2726-1.md) | Jul 2, 2026 | | Linux | python-tornado sles 15.7 | 4.5.3-150000.3.22.1 | [SUSE-SU-2026:2726-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2726-1.md) | Jul 2, 2026 | | Linux | python-tornado-debugsource amzn 2023 | 6.1.0-2.amzn2023.0.9 | [ALAS2023-2026-2016](https://patchblox.com/security/data/fix/linux/alas2023-2026-2016.md) | Aug 3, 2026 | | Linux | python-tornado-doc amzn 2023 | 6.1.0-2.amzn2023.0.9 | [ALAS2023-2026-2016](https://patchblox.com/security/data/fix/linux/alas2023-2026-2016.md) | Aug 3, 2026 | | Linux | python-tornado6 opensuse-leap 16.0 | 6.5-160000.5.1 | [OPENSUSE-SU-2026:21067-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21067-1.md) | Jun 26, 2026 | | Linux | python-tornado6 sles 15.6 | 6.3.2-150400.9.18.1 | [SUSE-SU-2026:2725-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2725-1.md) | Jul 2, 2026 | | Linux | python-tornado6 sles 15.7 | 6.3.2-150400.9.18.1 | [SUSE-SU-2026:2725-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2725-1.md) | Jul 2, 2026 | | Linux | python-tornado6 sles 16.0 | 6.5-160000.5.1 | [SUSE-SU-2026:22373-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22373-1.md) | Jun 26, 2026 | | Linux | python3-tornado RHEL 9 | 0:6.5.8-0.el9_8.1 | [RHSA-2026:67146](https://patchblox.com/security/data/fix/linux/rhsa-2026-67146.md) | Sep 19, 2026 | | Linux | python3-tornado almalinux 10 | 6.5.8-0.el10_2.1 | [ALSA-2026:67147](https://patchblox.com/security/data/fix/linux/alsa-2026-67147.md) | Sep 14, 2026 | | Linux | python3-tornado almalinux 9 | 6.5.8-0.el9_8.1 | [ALSA-2026:67146](https://patchblox.com/security/data/fix/linux/alsa-2026-67146.md) | Sep 14, 2026 | | Linux | python3-tornado amzn 2023 | 6.1.0-2.amzn2023.0.9 | [ALAS2023-2026-2016](https://patchblox.com/security/data/fix/linux/alas2023-2026-2016.md) | Aug 3, 2026 | | Linux | python3-tornado ol 10 | 0:6.5.8-0.el10_2.1 | [ELSA-2026-67147-0](https://patchblox.com/security/data/fix/linux/elsa-2026-67147-0.md) | Sep 14, 2026 | | Linux | python3-tornado ol 9 | 0:6.5.8-0.el9_8.1 | [ELSA-2026-67146-0](https://patchblox.com/security/data/fix/linux/elsa-2026-67146-0.md) | Sep 14, 2026 | | Linux | python3-tornado-debuginfo amzn 2023 | 6.1.0-2.amzn2023.0.9 | [ALAS2023-2026-2016](https://patchblox.com/security/data/fix/linux/alas2023-2026-2016.md) | Aug 3, 2026 | | Linux | python3.13-tornado amzn 2023 | 6.4.2-1.amzn2023.0.4 | [ALAS2023-2026-2015](https://patchblox.com/security/data/fix/linux/alas2023-2026-2015.md) | Aug 3, 2026 | | Linux | python3.13-tornado-debuginfo amzn 2023 | 6.4.2-1.amzn2023.0.4 | [ALAS2023-2026-2015](https://patchblox.com/security/data/fix/linux/alas2023-2026-2015.md) | Aug 3, 2026 | | Linux | python3.13-tornado-debugsource amzn 2023 | 6.4.2-1.amzn2023.0.4 | [ALAS2023-2026-2015](https://patchblox.com/security/data/fix/linux/alas2023-2026-2015.md) | Aug 3, 2026 | | Linux | python3.13-tornado-doc amzn 2023 | 6.4.2-1.amzn2023.0.4 | [ALAS2023-2026-2015](https://patchblox.com/security/data/fix/linux/alas2023-2026-2015.md) | Aug 3, 2026 | --- Data as of 2026-11-08T19:12:23Z UTC. 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