---
id: "CVE-2026-109800"
page: "https://infrastack.ai/live/CVE-2026-109800"
kind: "vulnerability"
aliases: ["CVE-2026-109800"]
title: "SAP Web Dispatcher: crafted input crashes the proxy and backend systems"
severity: "high"
cvss: 7.7
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["sap", "self-hosted", "vendor", "web-dispatcher"]
not_affected_if: ["no-authenticated-users", "no-web-dispatcher"]
published_at: "2026-11-10T01:17:14+00:00"
first_seen_at: "2026-11-10T01:26:37+00:00"
updated_at: "2026-11-10T01:35:44+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109800", "first_seen_at": "2026-11-10T01:26:37+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-11-10T01:35:44+00:00"}]
exploit_sources: []
---

# SAP Web Dispatcher: crafted input crashes the proxy and backend systems

Link for people: https://infrastack.ai/live/CVE-2026-109800 (this .md is for agents)

SAP Web Dispatcher does not validate certain inputs, which can cause memory corruption and terminate the process. An authenticated low-privilege user can send crafted input to take down the Web Dispatcher and every backend system reachable through it.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the SAP Web Dispatcher release and patch level in the SAP system information or the `sapwebdisp -version` output
- Compare against the SAP Security Note for this CVE, which the sources do not name: unknown

## Timeline

- 2026-11-10T01:26:37+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-109800
- 2026-11-10T01:35:44+00:00 analyst — SAP's November 2026 patch-day page is not live yet (empty on 2026-11-10); no SAP note number, WEBDISP versions or fix found. Only NVD (CNA sap) and a third-party OffSeq page (CWE-121 stack overflow, no versions). Nothing verified. Revisit once the SAP Nov patch-day page is published; it would give note number, affected WEBDISP releases and fixed patch levels. Sibling: CVE-2026-89126.

## From the sources

SAP Web Dispatcher does not sufficiently validate certain inputs during processing, which could lead to memory corruption. An attacker authenticated as a non-administrative user could exploit this vulnerability by providing specially crafted input, causing the Web Dispatcher process to terminate without user interaction. As a result, the Web Dispatcher and all backend systems reachable through it become unavailable, leading to a high impact on availability. There is no impact on confidentiality or integrity of the application.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_