---
id: "CVE-2025-49113"
kind: "vulnerability"
aliases: ["CVE-2025-49113"]
title: "Roundcube Webmail before 1.5.10 and 1.6.x before 1.6.11 allows remote code execution by authenticated users because\u2026"
severity: "critical"
cvss: 9.9
epss: null
exploited: true
status: "open"
category: "package"
products: [{"name": "roundcube webmail", "fixed": ["1.5.10"], "affected": "< 1.5.10", "ecosystem": "vendor"}, {"name": "roundcube webmail", "fixed": ["1.6.11"], "affected": ">= 1.6.0, < 1.6.11", "ecosystem": "vendor"}, {"name": "debian linux", "fixed": [], "affected": "= 11.0", "ecosystem": "vendor"}, {"name": "Roundcube Webmail", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "package", "roundcube", "self-hosted", "webmail"]
not_affected_if: ["auth-required", "managed-hosting"]
published_at: "2025-06-02T05:15:53+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-24T00:09:50+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-49113", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-49113", "first_seen_at": "2026-10-23T23:44:51+00:00"}]
---

# Roundcube Webmail before 1.5.10 and 1.6.x before 1.6.11 allows remote code execution by authenticated users because…

Roundcube Webmail has a deserialization flaw in its settings upload handler: the _from URL parameter is not validated in program/actions/settings/upload.php. An attacker with a logged-in account can run code on the mail server.

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

## Affected

- vendor:roundcube webmail affected < 1.5.10 fixed 1.5.10
- vendor:roundcube webmail affected >= 1.6.0, < 1.6.11 fixed 1.6.11
- vendor:debian linux affected = 11.0 fixed ?
- vendor:Roundcube Webmail affected ? fixed ?

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-49113
- 2026-10-23T23:44:51+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2025-49113

## From the sources

RoundCube Webmail contains a deserialization of untrusted data vulnerability that allows remote code execution by authenticated users because the _from parameter in a URL is not validated in program/actions/settings/upload.php.

CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

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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_