Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability
An XSS issue was discovered in Roundcube Webmail before 1.2.13, 1.3.x before 1.3.16, and 1.4.x before 1.4.10. The attacker can send a plain text e-mail message, with JavaScript in a link reference element that is mishandled by…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 4 / 5
- KEV catalog (CISA)22 Jun 2023
- Exploited in EUVD (ENISA)22 Jun 2023
- Used by ransomwareno
- EPSS above 10 %32.9%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply updates per vendor instructions.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Description ENISA EUVD
An XSS issue was discovered in Roundcube Webmail before 1.2.13, 1.3.x before 1.3.16, and 1.4.x before 1.4.10. The attacker can send a plain text e-mail message, with JavaScript in a link reference element that is mishandled by linkref_addindex in rcube_string_replacer.php.
Affected products
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
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Published
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Exploitation reported (ENISA)
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Added to the KEV catalog
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CISA remediation due date
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EPSS peak: 32.9%
References
Other exploited vulnerabilities from the same vendor
- CVE-2025-68461RoundCube Webmail Cross-site Scripting Vulnerability6.1 · Background exploitation
- CVE-2025-49113RoundCube Webmail Deserialization of Untrusted Data Vulnerability8.7 · Background exploitation
- CVE-2024-42009RoundCube Webmail Cross-Site Scripting Vulnerability8.6 · Background exploitation
- CVE-2024-37383RoundCube Webmail Cross-Site Scripting (XSS) Vulnerability7.1 · Background exploitation
- CVE-2020-13965Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability7.2 · Background exploitation
- CVE-2023-43770Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability6.7 · Background exploitation