---
description: We are changing the maximum request-payload size inspected by the Cloudflare WAF
title: Updating the WAF maximum payload values
image: https://developers.cloudflare.com/changelog/post/2025-12-05-waf-max-payload-size-change/og.png?v=9136cebe879d144e
---

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December 5, 2025

## Updating the WAF maximum payload values

[WAF](https://developers.cloudflare.com/waf/)

Copy as Markdown| [View as Markdown](https://developers.cloudflare.com/changelog/post/2025-12-05-waf-max-payload-size-change/index.md)| [Agent setup](https://developers.cloudflare.com/agent-setup/)

We are reinstating the maximum request-payload size the Cloudflare WAF inspects, with WAF on Enterprise zones inspecting up to 128 KB.

**Key Findings**

On [December 5, 2025](https://developers.cloudflare.com/changelog/post/2025-12-05-rcs-vuln/), we initially attempted to increase the maximum WAF payload limit to 1 MB across all plans. However, an automatic rollout for all customers proved impractical because the increase led to a surge in false positives for existing managed rules.

This issue was particularly notable within the Cloudflare Managed Ruleset and the Cloudflare OWASP Core Ruleset, impacting customer traffic.

**Impact**

Customers on paid plans can increase the limit to 1 MB for any of their zones by contacting Cloudflare Support. Free zones are already protected up to 1 MB and do not require any action.

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