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.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00057.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Roundcube Webmail unaffected
Version Status Constraints
1.6.0 affected < 1.6.16
1.7.0 affected < 1.7.1

No data.

No data.

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Vendors Products
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Webmail Subscribe

Project Subscriptions

Vendors Products
Roundcube Subscribe
Webmail Subscribe
Advisories
Source ID Title
Debian DLA Debian DLA DLA-4604-1 roundcube security update
Debian DSA Debian DSA DSA-6301-1 roundcube security update
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/roundcube/roundcubemail/commit/703318e6a59515b73b0d8aa2a91e346b02f56baa cve-icon cve-icon
https://github.com/roundcube/roundcubemail/commit/a4eb375b98cc3d055de665c34efc729dd8ef272a cve-icon cve-icon
https://github.com/roundcube/roundcubemail/releases/tag/1.6.16 cve-icon cve-icon
https://github.com/roundcube/roundcubemail/releases/tag/1.7.1 cve-icon cve-icon
https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1 cve-icon cve-icon
History

Tue, 26 May 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 25 May 2026 20:45:00 +0000

Type Values Removed Values Added
Title Pre-authentication Arbitrary File Deletion via Session Poisoning in Roundcube Webmail

Mon, 25 May 2026 19:45:00 +0000

Type Values Removed Values Added
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.
First Time appeared Roundcube
Roundcube webmail
Weaknesses CWE-669
CPEs cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
Vendors & Products Roundcube
Roundcube webmail
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-05-26T13:02:10.123Z

Reserved: 2026-05-25T19:23:40.394Z

Link: CVE-2026-48847

cve-icon Vulnrichment

Updated: 2026-05-26T13:02:05.131Z

cve-icon NVD

Status : Deferred

Published: 2026-05-25T20:16:37.287

Modified: 2026-05-26T19:26:42.643

Link: CVE-2026-48847

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-25T21:00:10Z

Weaknesses