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CVE-2020-13965: Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability

criticalknown exploitedpublic exploitCVE-2020-13965
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Roundcube Webmail contains a cross-site scripting (XSS) vulnerability that allows a remote attacker to manipulate data via a malicious XML attachment.

CSIRTS triage

vendor: Roundcubeproduct: Roundcube WebmailCross-site scripting
What
The vulnerability allows remote attackers to manipulate data via a malicious XML attachment.
Who is affected
Users of Roundcube Webmail who handle XML attachments.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Upgrade to the latest version of Roundcube Webmail.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2024-06-26
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2020-13965

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2020-13965coverage & exploitation statusNVD · CVE.org

Recent advisories for Roundcube Webmail Cross-Site

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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