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Vulnerability record · CVE-2026-75010 · published 17 August 2026

CVE-2026-75010: Roundcube webmail vulnerability

Roundcube · Webmail

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.

4.3 CVSS 3.1 Medium EPSS 0.39% · top 69.2% CWE-669 · CWE-669
4.3CVSS 3.1 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References
8 Sep 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/roundcube/roundcubemail/commit/65b8ea9d8304b10f1d3bda5bcc82f9c682cf804c Patch
https://github.com/roundcube/roundcubemail/commit/b0e26d617e7bbe3051135285993bc55f718fea2f Patch
https://github.com/roundcube/roundcubemail/releases/tag/1.6.18 Release Notes
https://github.com/roundcube/roundcubemail/releases/tag/1.7.3 Release Notes
https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3 Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-75010), CISA KEV, FIRST EPSS (scores of 2026-10-01). This page is refreshed as NVD updates the record.