CVE-2026-62644

critical

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, the password plugin of the Roundcube Webmail was subject to username spoofing via session data, whic…

Vendor / product: Roundcube — webmail

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, the password plugin of the Roundcube Webmail was subject to username spoofing via session data, which could lead to account takeover.

CVSS

9.8

9.8 (CVSS v3.1)

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

Severity source: NVD CVSS v3.1 (nvd@nist.gov)

Timeline (UTC)

Published: 2026-07-14 16:17

Modified: 2026-10-24 21:10

NVD status: Analyzed

Last synced 2 days ago

Verified against the source API 2026-10-27 07:07 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

roundcube / webmail ≥1.6.0 <1.6.17, ≥1.7.0 <1.7.2

Weakness classification (CWE)

CWE-290

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Vendor advisory: https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2

Patch / mitigation: https://github.com/roundcube/roundcubemail/commit/5cdc6a48b40beabff7f0bf5d9035f4491e877e4c

Patch / mitigation: https://github.com/roundcube/roundcubemail/commit/7414fef51cd2407d39faab99680763f10ed5231d

Patch / mitigation: https://github.com/roundcube/roundcubemail/commit/83150ce04d689a70f92d511bcae40adba8d55476

Patch / mitigation: https://github.com/roundcube/roundcubemail/commit/9a96c20d8c7c9135876b68bebd6960af3ee60923

References

https://github.com/roundcube/roundcubemail/commit/5cdc6a48b40beabff7f0bf5d9035f4491e877e4c cve@mitre.org
https://github.com/roundcube/roundcubemail/commit/7414fef51cd2407d39faab99680763f10ed5231d cve@mitre.org
https://github.com/roundcube/roundcubemail/commit/83150ce04d689a70f92d511bcae40adba8d55476 cve@mitre.org
https://github.com/roundcube/roundcubemail/commit/9a96c20d8c7c9135876b68bebd6960af3ee60923 cve@mitre.org
https://github.com/roundcube/roundcubemail/releases/tag/1.6.17 cve@mitre.org
https://github.com/roundcube/roundcubemail/releases/tag/1.7.2 cve@mitre.org
https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2 cve@mitre.org

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗

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CVE-2026-62644

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Weakness classification (CWE)

Mitigation & advisories

References

Data sources

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