CVE-2026-75010 Information disclosure in Webmail

What is CVE-2026-75010?

CVE-2026-75010 is a medium-severity vulnerability in Roundcube Webmail, published on 17 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the modoboa driver of the password plugin could leak a Modoboa API authentication token to a user-controlled host via crafted session data. This issue only affects Roundcube instances using the password plugin with its modoboa driver.

Weakness: CWE-669

Which versions are affected by CVE-2026-75010?

It affects 1 product.

Products include Roundcube Webmail.

How do I fix CVE-2026-75010?

Upgrade to a fixed version.

Is CVE-2026-75010 being exploited?

There is no known exploitation of CVE-2026-75010 in the wild and no public exploit code.

Other vulnerabilities in Roundcube Webmail

• CVE-2024-42009 RoundCube Webmail Cross-Site Scripting Exploited Critical 9.3
• CVE-2025-68461 RoundCube Webmail Cross-site Scripting Exploited High 7.2
• CVE-2008-5619 PHPMailer susceptible to arbitrary code execution Critical 10.0
• CVE-2024-37385 Command injection in n/a Critical 9.8
• CVE-2024-42008 Cross-site scripting in n/a Critical 9.3

All Roundcube Webmail vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2026-75010, GHSA-qv9q-5762-xc65, UBUNTU-CVE-2026-75010.