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Oct 13, 2025
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waf-release-oct-13-2025 #25801

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waf-release-oct-13-2025
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44 changes: 44 additions & 0 deletions src/content/changelog/waf/2025-10-13-waf-release.mdx
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---
title: "WAF Release - 2025-10-13"
description: Cloudflare WAF managed rulesets 2025-10-13 release
date: 2025-10-13
---

import { RuleID } from "~/components";

This week’s highlights include a new JinJava rule targeting a sandbox-bypass flaw that could allow malicious template input to escape execution controls. The rule improves detection for unsafe template rendering paths.

**Key Findings**

New WAF rule deployed for JinJava (CVE-2025-59340) to block a sandbox bypass in the template engine that permits attacker-controlled type construction and arbitrary class instantiation; in vulnerable environments this can escalate to remote code execution and full server compromise.

**Impact**

- CVE-2025-59340 — Exploitation enables attacker-supplied type descriptors / Jackson `ObjectMapper` abuse, allowing arbitrary class loading, file/URL access (LFI/SSRF primitives) and, with suitable gadget chains, potential remote code execution and system compromise.

<table style="width: 100%">
<thead>
<tr>
<th>Ruleset</th>
<th>Rule ID</th>
<th>Legacy Rule ID</th>
<th>Description</th>
<th>Previous Action</th>
<th>New Action</th>
<th>Comments</th>
</tr>
</thead>
<tbody>
<tr>
<td>Cloudflare Managed Ruleset</td>
<td>
<RuleID id="b327d6442e2d4848b4aab3cbc04bab5f" />
</td>
<td>100892</td>
<td>JinJava - SSTI - CVE:CVE-2025-59340</td>
<td>Log</td>
<td>Block</td>
<td>This is a New Detection</td>
</tr>
</tbody>
</table>
27 changes: 19 additions & 8 deletions src/content/changelog/waf/scheduled-waf-release.mdx
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---
title: WAF Release - Scheduled changes for 2025-10-13
description: WAF managed ruleset changes scheduled for 2025-10-13
date: 2025-10-06
title: WAF Release - Scheduled changes for 2025-10-20
description: WAF managed ruleset changes scheduled for 2025-10-20
date: 2025-10-13
scheduled: true
---

Expand All @@ -21,15 +21,26 @@ import { RuleID } from "~/components";
</thead>
<tbody>
<tr>
<td>2025-10-06</td>
<td>2025-10-13</td>
<td>2025-10-20</td>
<td>Log</td>
<td>100892</td>
<td>100598A</td>
<td>
<RuleID id="b327d6442e2d4848b4aab3cbc04bab5f" />
<RuleID id="933fc13202cd4e8ba498c0f32b4101ab" />
</td>
<td>JinJava - SSTI - CVE:CVE-2025-59340</td>
<td>This is a New Detection</td>
<td>Remote Code Execution - Common Bash Bypass - Beta</td>
<td>This rule is merged into the original rule "Remote Code Execution - Common Bash Bypass" (ID: <RuleID id="f8238867ed3e4d3a9a7b731a50cec478" />)</td>
</tr>
<tr>
<td>2025-10-13</td>
<td>2025-10-20</td>
<td>Log</td>
<td>100916A</td>
<td>
<RuleID id="185b5df42d1e44e0aeb8f8b8a1118614" />
</td>
<td>Oracle E-Business Suite - Remote Code Execution - CVE:CVE-2025-61882 - 2</td>
<td>This is a New Detection</td>
</tr>
</tbody>
</table>
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