---
id: "CVE-2026-93003"
kind: "vulnerability"
aliases: ["CVE-2026-93003"]
title: "Web add-on HTTP server reads headers from request body"
severity: "medium"
cvss: 6.9
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["other", "web-add-on"]
not_affected_if: []
published_at: "2026-10-20T16:17:17+00:00"
first_seen_at: "2026-10-23T21:57:20+00:00"
updated_at: "2026-10-25T03:40:24+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93003", "first_seen_at": "2026-10-23T21:57:20+00:00"}]
---

# Web add-on HTTP server reads headers from request body

The Web add-on's HTTP server scans the whole request packet for header fields rather than stopping at the end of the header section. A header name placed in the body is treated as a real header, so a client can influence request framing it should not control.

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

## Timeline

- 2026-10-23T21:57:20+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-93003

## From the sources

The Web add-on's HTTP server searches the entire request packet for header fields instead of stopping at the end of the header section. A header field name placed in the request body is therefore reported to the server as though it were a header, which lets a client control request framing decisions it should not be able to reach.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_