---
id: "CVE-2025-68645"
kind: "vulnerability"
aliases: ["CVE-2025-68645"]
title: "synacor zimbra collaboration suite: A Local File Inclusion (LFI) vulnerability exists in the Webmail Classic UI of Zimbra Collaboration (ZCS) 10.0 and\u2026"
severity: "high"
cvss: 8.8
epss: null
exploited: true
status: "open"
category: "runtime"
products: [{"name": "Synacor Zimbra Collaboration Suite (ZCS)", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "synacor zimbra collaboration suite", "fixed": ["10.0.18"], "affected": ">= 10.0.0, < 10.0.18", "ecosystem": "vendor"}, {"name": "synacor zimbra collaboration suite", "fixed": ["10.1.13"], "affected": ">= 10.1.0, < 10.1.13", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["cloudflare", "exploited", "lab-disclosure", "mail-server", "php", "runtime", "self-hosted", "zimbra"]
not_affected_if: ["managed-hosting"]
published_at: "2025-12-22T18:16:17+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-24T19:12:57+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-68645", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68645", "first_seen_at": "2026-10-23T23:44:51+00:00"}, {"source": "lab", "url": "https://developers.cloudflare.com/changelog/post/2026-02-16-waf-release/", "first_seen_at": "2026-10-24T19:12:57+00:00"}]
---

# synacor zimbra collaboration suite: A Local File Inclusion (LFI) vulnerability exists in the Webmail Classic UI of Zimbra Collaboration (ZCS) 10.0 and…

Zimbra Collaboration Suite has a PHP remote file inclusion flaw: crafted requests to the /h/rest endpoint can make the server include arbitrary files from its WebRoot directory. Attackers can use this to run code on the mail server and reach any data it holds, and CISA reports it is being exploited in the wild.

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

## Affected

- vendor:Synacor Zimbra Collaboration Suite (ZCS) affected ? fixed ?
- vendor:synacor zimbra collaboration suite affected >= 10.0.0, < 10.0.18 fixed 10.0.18
- vendor:synacor zimbra collaboration suite affected >= 10.1.0, < 10.1.13 fixed 10.1.13

## Fix

Apply the vendor mitigation from Synacor, as CISA directs; the sources do not name a patched version.
If no mitigation is available, CISA says to discontinue use of the product.

## Mitigated for you by

- Cloudflare (waf-rule, since 2026-02-16): covers HTTP requests proxied through Cloudflare matching the Zimbra Local File Inclusion pattern (CVE-2025-68645), via Cloudflare Managed Ruleset rule ...833761f7 Limits: Traffic not proxied through Cloudflare; rule action changed from Log to Block; coverage beyond the rule's detection pattern is not stated Still: none stated; the document does not say customers must patch Zimbra https://developers.cloudflare.com/changelog/post/2026-02-16-waf-release/

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-68645
- 2026-10-23T23:44:51+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2025-68645
- 2026-10-24T19:12:57+00:00 lab https://developers.cloudflare.com/changelog/post/2026-02-16-waf-release/ — Cloudflare: WAF Release - 2026-02-16 · Changelog

## Documents

- [advisory] Cloudflare: WAF Release - 2026-02-16 · Changelog https://developers.cloudflare.com/changelog/post/2026-02-16-waf-release/

## From the sources

WAF Release - 2026-02-16 · Changelog

# Changelog

New updates and improvements at Cloudflare.

February 16, 2026

## WAF Release - 2026-02-16

This week’s release introduces new detections for CVE-2025-68645 and CVE-2025-31125.

Key Findings

- CVE-2025-68645: A Local File Inclusion (LFI) vulnerability in the Webmail Classic UI of Zimbra Collaboration Suite (ZCS) 10.0 and 10.1 allows unauthenticated remote attackers to craft requests to the `/h/rest` endpoint, improperly influence internal dispatching, and include arbitrary files from the WebRoot directory.
- CVE-2025-31125: Vite, the JavaScript frontend tooling framework, exposes content of non-allowed files via `?inline&import` when its development server is network-exposed, enabling unauthorized attackers to read arbitrary files and potentially leak sensitive information.

| Ruleset | Rule ID | Legacy Rule ID | Description | Previous Action | New Action | Comments |
| --- | --- | --- | --- | --- | --- | --- |
| Cloudflare Managed Ruleset | ...833761f7 | N/A | Zimbra - Local File Inclusion - CVE:CVE-2025-68645 | Log | Block | This is a new detection. |
| Cloudflare Managed Ruleset | ...950ed8c8 | N/A | Vite - WASM Import Path Traversal - CVE:CVE-2025-31125 | Log | Block | This is a new detection. |

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