CVE-2026-35543
An attacker can exploit multiple vulnerabilities in Roundcube to manipulate files, bypass security measures, conduct a cross-site scripting attack, and disclose information.
CSIRTS triage
- What
- An attacker can exploit multiple vulnerabilities in Roundcube to manipulate files, bypass security measures, conduct a cross-site scripting attack, and disclose information.
- Who is affected
- Deployments of Roundcube are affected by these vulnerabilities.
- Urgency
- Remediation is necessary as these vulnerabilities can lead to significant security breaches, although exploitation is not currently reported.
- Action
- Update Roundcube to the latest version to address these vulnerabilities.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.40% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 33% of all EPSS-scored CVEs.
Advisory coverage (1)
- medium[UPDATE] [medium] Roundcube: Multiple vulnerabilitiescert-bund · 2026-07-22
External references
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