# CVE-2026-115775: Twisted: Unauthenticated Remote Denial of Service in the Twisted words domish XML Element Stream via an Unbounded Element Tree

CVE-2026-115775 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-115775, released November 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-115775
- Priority: Routine
- CVSS: n/a (Moderate)
- EPSS: 0.0044
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 23, 2026
- Weakness: Uncontrolled Resource Consumption
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-115775

## Description

A flaw was found in Twisted. An unauthenticated remote attacker can cause a Denial of Service (DoS) by exhausting server memory. The issue occurs because the XML stream parser retains unfinished elements in memory without enforcing size or element count limits. By transmitting a continuous stream of child elements within an unclosed container during pre-authentication communication, an attacker can crash the server process.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | python3-twisted amzn 2023 | 22.4.0-129.amzn2023.0.7 | [ALAS2023-2026-3385](https://patchblox.com/security/data/fix/linux/alas2023-2026-3385.md) | Nov 10, 2026 |
| Linux | python3-twisted+tls amzn 2023 | 22.4.0-129.amzn2023.0.7 | [ALAS2023-2026-3385](https://patchblox.com/security/data/fix/linux/alas2023-2026-3385.md) | Nov 10, 2026 |
| Linux | twisted Debian 14 | 26.10.0-1 | [DEBIAN-CVE-2026-115775](https://patchblox.com/security/data/fix/linux/debian-cve-2026-115775.md) | Nov 3, 2026 |

---

Data as of 2026-11-11T07:45:43Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.