RoundCube Webmail Deserialization of Untrusted Data Vulnerability

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• NewsExploited · CISA KEVRoundcube · Webmail

  RoundCube Webmail Deserialization of Untrusted Data Vulnerability

  CVE-2025-49113

  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's required action · due 13 Mar 2026 for U.S. federal civilian agencies

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

  Cited by CISA: roundcube.net · github.com · github.com · nvd.nist.gov

  Added to KEV 20 Feb 2026 · Source checked 4 Nov 2026, 16:40 UTC · CISA KEV entry

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