CVE-2026-62644
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.
02 Description
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.
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.50% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 42.5% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-10-24.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-07-14 15:55Z3 MO AGO
- Last updated
- 2026-07-14 17:15Z3 MO AGO
- Reserved
- 2026-07-14
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.4)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-290Authentication Bypass by SpoofingBase
- Data version
- 5.2
- Document digest
- 326c2b88476407d2ee06e7f7f591180e888026a89bef443780b0e441cff4e9e2
05 Affected products
06 References
- roundcube.nethttps://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2
- github.comhttps://github.com/roundcube/roundcubemail/releases/tag/1.7.2
- github.comhttps://github.com/roundcube/roundcubemail/commit/7414fef51cd2407d39faab99680763f10ed5231d
- github.comhttps://github.com/roundcube/roundcubemail/commit/9a96c20d8c7c9135876b68bebd6960af3ee60923
- github.comhttps://github.com/roundcube/roundcubemail/releases/tag/1.6.17
- github.comhttps://github.com/roundcube/roundcubemail/commit/83150ce04d689a70f92d511bcae40adba8d55476
- github.comhttps://github.com/roundcube/roundcubemail/commit/5cdc6a48b40beabff7f0bf5d9035f4491e877e4c
07 Fixed in
Debian 12
- roundcube Fixed in 1.6.5+dfsg-1+deb12u10
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- roundcube Fixed in 1.6.17+dfsg-0+deb13u1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- roundcube Fixed in 1.6.17+dfsg-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.10
- roundcube No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- roundcube No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- roundcube No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 20.04 LTS
- roundcube No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 22.04 LTS
- roundcube No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 24.04 LTS
- roundcube No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 26.04 LTS
- roundcube No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.