SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2020-13965

Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability

KEVMEDIUM 6.1EPSS 76.6%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 17 July 2024). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

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 3.1
6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
76.60% probability · 100th percentile
CISA KEV
Listed 26 June 2024 · due 17 July 2024
Weakness
CWE-79, CWE-80
Affected
roundcube/webmail · debian/debian linux · fedoraproject/fedora
Source
cve@mitre.org

CISA notes

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://roundcube.net/news/2020/06/02/security-updates-1.4.5-and-1.3.12; https://nvd.nist.gov/vuln/detail/CVE-2020-13965

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.