Arbitrary File Deletion in Roundcube Webmail

Publication date: 2026-05-25

Last updated on: 2026-05-25

Assigner: MITRE

Description

Roundcube Webmail 1.6.x before 1.6.16, and 1.7.x before 1.7.1 allows pre-authentication arbitrary file deletion via redis/memcache session poisoning bypass.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-05-25

Last Modified

2026-05-25

Generated

2026-07-06

AI Q&A

2026-05-26

EPSS Evaluated

2026-07-04

NVD

CVE-2026-48847

EUVD

EUVD-2026-31724

Affected Vendors & Products

Vendor	Product	Version / Range
roundcube	roundcube	to 1.6.16 (exc)
roundcube	roundcube	to 1.7.1 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-669	The product does not properly transfer a resource/behavior to another sphere, or improperly imports a resource/behavior from another sphere, in a manner that provides unintended control over that resource.

Attack-Flow Graph

Executive Summary

This vulnerability affects Roundcube Webmail versions 1.6.x before 1.6.16 and 1.7.x before 1.7.1. It allows an attacker to delete arbitrary files without authentication by exploiting a session poisoning technique involving redis or memcache.

Impact Analysis

The impact of this vulnerability is limited to availability since it allows arbitrary file deletion. An attacker could delete important files, potentially disrupting the normal operation of the Roundcube Webmail service.

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