CVE-2025-49113—RoundCube Webmail Deserialization of Untrusted Data Vulnerability

Vulnerability Name

RoundCube Webmail Deserialization of Untrusted Data Vulnerability

Description

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.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:

Unknown

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.

Additional Notes

• https://roundcube.net/news/2025/06/01/security-updates-1.6.11-and-1.5.10
• https://github.com/roundcube/roundcubemail/releases/tag/1.5.10
• https://github.com/roundcube/roundcubemail/releases/tag/1.6.11
• https://nvd.nist.gov/vuln/detail/CVE-2025-49113

Related News Articles

• CISA: Recently patched RoundCube flaws now exploited in attacksFebruary 23, 2026
• CISA Adds Two Actively Exploited Roundcube Flaws to KEV CatalogFebruary 21, 2026

Related Weaknesses

• CWE-502