CISA KEV · Known exploitedMedium

CVE-2020-13965

Roundcube Webmail

An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. There is XSS via a malicious XML attachment because text/xml is among the allowed types for a preview.

CVSS
6.1
EPSS
76.6%
99.5% percentile
CISA KEV
Listed
Published
2020.06.09
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability76.6%
Technical severityCVSS 6.1

Vulnerability overview

An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. There is XSS via a malicious XML attachment because text/xml is among the allowed types for a preview.

Affected product and versions

Product
Roundcube Webmail
Affected versions
1.4.0, < 1.3.12, >= 1.4.0 < 1.4.5, 9.0, 10.0, 31, 32
Fixed versions
1.3.12, 1.4.5

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Due date: 2024.07.17
  1. 1
    Identify

    Confirm that Roundcube Webmail and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE
CWE-79, CWE-80
KEV added
2024.06.26
Ransomware use
미확인
CVE-2020-13965 — Roundcube Webmail | SECUFOCUS NOW