CVE-2026-35537

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Unsafe deserialization in the redis/memcache session handler may lead to arbitrary file write operations by unauthenticated attackers via crafted session data.

CVSS v3 3.7 LOW

3.7^/10

CVSS v3 : LOW

Vector :

Exploitability : 2.2 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/roundcube/roundcubemail/commit/618c5428edc69fb088e7ac6c89e506dd39df3	Patch
https://github.com/roundcube/roundcubemail/commit/6d586cfa4d8a31f7957f7a445aaedd52592a0e74	Patch
https://github.com/roundcube/roundcubemail/commit/a4ead994d2f0ea92e4a1603196a197e0d5df1620	Patch
https://github.com/roundcube/roundcubemail/releases/tag/1.5.14	Release Notes
https://github.com/roundcube/roundcubemail/releases/tag/1.6.14	Release Notes
https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5	Release Notes
https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14	Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/04/11/6	Issue Tracking Mailing List

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:roundcube:webmail::::::::
	cpe:2.3:a:roundcube:webmail::::::::

History

No history.

Information

Published : 2026-04-03 04:17

Updated : 2026-07-24 21:10

NVD link : CVE-2026-35537

Mitre link : CVE-2026-35537

CVE.ORG link : CVE-2026-35537

JSON object : View

Products Affected

roundcube

webmail

CWE

CWE-502

Deserialization of Untrusted Data

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