---
title: "An application may not call Brotli directly; reading a 'Content-Encoding: br' response or… — Turan Security Xavfsizlik Byulleteni — DecisionGateway"
description: "statement by Turan Security Xavfsizlik Byulleteni, recorded recently — verbatim quote and source citation."
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statement

# **An application may not call Brotli directly; reading a 'Content-Encoding: br' response or decompressing a Brotli-compressed request body is enough.**

A statement by Turan Security Xavfsizlik Byulleteni. Statements are as reported by the cited publishers — not verified by DecisionGateway.

> *Brotli'ni to'g'ridan-to'g'ri chaqirmasligi ham mumkin: "Content-Encoding: br" javobini o'qish yoki Brotli bilan siqilgan so'rov tanasini ochish kifoya.*

turansecurityPublished 2026-10-25 [ Read source](https://t.me/turansecurity/679)

## **Discussion**

## **Related claims**

[**Organizations should inventory Brotli versions in Node.js, Bun, Envoy, Istio and Python environments, since updating the runtime is not always sufficient and separate Brotli libraries inside the application should also be checked.**Turan Security Xavfsizlik Byulleteni · commitment](https://dgw.tmarket.io/claims/01a1d0d9-f223-757f-a905-12e3563920ac) [**A CVE-2026-111497 vulnerability was identified in Google's Brotli data compression library.**Turan Security Xavfsizlik Byulleteni · investigation](https://dgw.tmarket.io/claims/01a1d0d9-efd7-7fac-964b-17ccd3994fcb) [**The vulnerability affects some systems that use Brotli and brotlicffi libraries in Node.js, Bun, Envoy, Istio and Python.**Turan Security Xavfsizlik Byulleteni · statement](https://dgw.tmarket.io/claims/01a1d0d9-f08c-7cef-880f-73613505bb79) [**Turan Security calls on organizations to inventory Brotli-dependent components, strengthen monitoring, and not delay security updates.**Turan Security · commitment](https://dgw.tmarket.io/claims/01a1d0d9-f26c-7d6d-8000-a92835acd167) [**WAF and REST API request logs should be checked.**turansecurity · commitment](https://dgw.tmarket.io/claims/01a1d0d9-d41c-7c33-821a-780a008bef84) [**Website owners must check for signs of breaches.**THnewsupdates · commitment](https://dgw.tmarket.io/claims/01a1c5f7-f98e-7b4f-a17f-1156af32eb75)

[All claims](https://dgw.tmarket.io/claims)

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