Search/CVE-2026-26079
● CVE — Medium

CVE-2026-26079

DiscoveredFeb 11, 2026UpdatedApr 15, 2026

Roundcube Webmail before 1.5.13 and 1.6 before 1.6.13 allows Cascading Style Sheets (CSS) injection, e.g., because comments are mishandled.

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CVSS v3.1
4.7 MEDIUM
EPSS
0.35%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
1
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 16, 2026 → Oct 26, 2026
▲ 0.06pp
0.29% → 0.35% over 6 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionREQUIRED
ScopeCHANGED
ConfidentialityLOW
IntegrityNONE
AvailabilityNONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Connections
2 relationships
Timeline
disclosure → media coverage
Feb 11, 2026
Disclosure — published as a CVE record. · last revised by NVD Apr 15, 2026
Apr 29, 2026
ubuntu.com reports: USN-8223-1: Roundcube Webmail vulnerabilities