Roundcube Webmail File Disclosure Vulnerability
Roundcube Webmail before 1.1.10, 1.2.x before 1.2.7, and 1.3.x before 1.3.3 allows unauthorized access to arbitrary files on the host's filesystem, including configuration files, as exploited in the wild in November 2017. The attacker must…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 3 / 5
- KEV catalog (CISA)03 Nov 2021
- Exploited in EUVD (ENISA)03 Nov 2021
- Used by ransomwareno
- EPSS above 10 %45.7%
- No account, over the networkno
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
Roundcube Webmail before 1.1.10, 1.2.x before 1.2.7, and 1.3.x before 1.3.3 allows unauthorized access to arbitrary files on the host's filesystem, including configuration files, as exploited in the wild in November 2017. The attacker must be able to authenticate at the target system with a valid username/password as the attack requires an active session. The issue is related to file-based attachment plugins and _task=settings&_action=upload-display&_from=timezone requests.
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: 45.7%
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