[UPDATE] [high] Roundcube Webmail: Multiple vulnerabilities
An attacker can exploit multiple vulnerabilities in Roundcube Webmail to conduct SQL injection attacks, bypass security measures, manipulate data, disclose confidential information, gain elevated privileges, execute arbitrary code, or conduct cross-site scripting attacks.
CSIRTS triage
- What
- Multiple vulnerabilities can lead to SQL injection, security bypass, data manipulation, information disclosure, privilege escalation, and arbitrary code execution.
- Who is affected
- Attackers targeting Roundcube Webmail installations.
- Urgency
- High urgency due to the variety of critical vulnerabilities that can be exploited.
- Action
- Apply available patches to mitigate these vulnerabilities.
AI-assisted analysis generated from the source advisory — verify against the original.
Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1671
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.
- Low exploitation riskCVE-2026-488420.76% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 52% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-488430.27% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 19% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-488450.38% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-488460.40% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-488470.43% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 36% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-488480.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 32% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-488440.41% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-488490.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-48842 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-48843 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-48845 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-48846 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-48847 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-48848 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-48844 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-48849 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Roundcube Webmail
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.
- high[NEW] [high] Roundcube Webmail: Multiple vulnerabilitiescert-bund · 2026-08-31
- mediumCVE-2026-75010: In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the modoboa driver of the password …nvd · 2026-08-17
- mediumCVE-2026-75007: In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the LDAP search filter was subject …nvd · 2026-08-17
- mediumCVE-2026-75006: In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, insufficient Cascading Style Sheets…nvd · 2026-08-17
- mediumCVE-2026-75004: In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, improper rule name quoting could le…nvd · 2026-08-17
- mediumCVE-2026-75003: In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, an unclosed url() in a FuncIRI attr…nvd · 2026-08-17
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