# CVE-2026-49854: python-tornado: This update for python-tornado fixes the following issues  - CVE-2026-49853: authorization header forwarded across cr...

CVE-2026-49854 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-2026-49854
- Priority: High
- CVSS: n/a (important)
- EPSS: 0.0042
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 26, 2026

## Description

This update for python-tornado fixes the following issues  - CVE-2026-49853: authorization header forwarded across cross-origin redirects in SimpleAsyncHTTPClient (bsc#1268395). - CVE-2026-49854: out-of-bounds memory access via C extension (bsc#1268396). - CVE-2026-49855: AsyncHTTPClient accumulates decompressed chunks without size limit (bsc#1268397).

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| 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 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-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 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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