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Medium 4.3Published Aug 17, 2026
CVE-2026-75004In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, improper rule name quoting could lead to managesieve_disabled_actions setting bypass via a crafted rule name in a Sieve script.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, improper rule name quoting could lead to managesieve_disabled_actions setting bypass via a crafted rule name in a Sieve script. This issue only affects Roundcube instances using the managesieve plugin.
- CVSS
- 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Weakness (CWE)
- CWE-77
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mitre
- NVD analysis
- Analyzed
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Roundcube Webmail roundcube:webmail (from the name) | from 1.6.0 before 1.6.18; from 1.7.0 before 1.7.3 | CNA record |
roundcube webmail roundcube:webmail | from 1.6.0 before 1.6.18; from 1.7.0 before 1.7.3 | NVD |
References
- https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3vendor-advisory
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.18release-notes
- https://github.com/roundcube/roundcubemail/releases/tag/1.7.3release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.