Search/CVE-2026-75004
● CVE — Medium

CVE-2026-75004

VendorroundcubeProductwebmailDiscoveredAug 17, 2026UpdatedSep 8, 2026

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.

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CVSS v3.1
4.3 MEDIUM
EPSS
0.37%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 19, 2026 → Sep 25, 2026
▲ 0.09pp
0.29% → 0.37% over 3 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
ConfidentialityNONE
IntegrityLOW
AvailabilityNONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Connections
2 relationships
Timeline
disclosure → media coverage
Aug 17, 2026
Disclosure — published as a CVE record. · last revised by NVD Sep 8, 2026