An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Unsafe deserialization in the redis/memcache session handler may lead to arbitrary file write operations by unauthenticated attackers via crafted session data.
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This low-severity CVE scores 3.7 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 92% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Unsafe deserialization in the redis/memcache session handler may lead to arbitrary file write operations by unauthenticated attackers via crafted session data.
April 3, 2026
April 13, 2026
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| roundcube/roundcubemail | 1.7-beta ... 1.7-rc4 (6 versions) | 1.7-rc5 | — |
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
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CWE-502